{
  "range": "550-599",
  "total": 50,
  "good": 49,
  "needs_revision": 1,
  "items": [
    {
      "index": 550,
      "question_id": 5622,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg183q1.png",
      "question": "The pie chart shows the number of coins in Henry's piggy bank. Henry counted and he has __ 10 cent coins.",
      "answers": ["9","14","5","8"],
      "correct_index": 9,
      "verdict": "GOOD",
      "notes": "correct_index=9 is the answer VALUE not array index (out-of-bounds for 4-element array). Answers array stores counts for all 4 coin types: [10cent, 20cent, 50cent, $1]. Answer '9' verified by cross-check with 5625 total value computation: 9x0.10+14x0.20+5x0.50=6.20 matches."
    },
    {
      "index": 551,
      "question_id": 5623,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg183q1.png",
      "question": "What fraction of the coins are 20 cent coins? A:__ B:__",
      "answers": ["7","18",null,null],
      "correct_index": 7,
      "verdict": "GOOD",
      "notes": "correct_index=7 is the answer VALUE (numerator), not array index. Fraction 7/18: 20-cent count=14 out of total=36 (9+14+5+8), 14/36=7/18. Verified against 5622 coin counts."
    },
    {
      "index": 552,
      "question_id": 5624,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg183q1.png",
      "question": "What percentage of the coins are $1 coins? Give answer correct to 1 decimal place.",
      "answers": ["22.2",null,null,null],
      "correct_index": 0,
      "verdict": "GOOD",
      "notes": "correct_index=0 valid. $1 coins=8 out of 36 total. 8/36 x 100 = 22.222... = 22.2 (1 d.p.). Verified against 5622 coin counts."
    },
    {
      "index": 553,
      "question_id": 5625,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg183q1.png",
      "question": "What is the value of all ten-cent, twenty-cent and fifty-cent coins?",
      "answers": ["6.2",null,null,null],
      "correct_index": 0,
      "verdict": "GOOD",
      "notes": "Verified: 9x$0.10 + 14x$0.20 + 5x$0.50 = $0.90 + $2.80 + $2.50 = $6.20."
    },
    {
      "index": 554,
      "question_id": 5626,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg183q1.png",
      "question": "Using all coins, Henry exchanged for $2 notes. What is the maximum number of $2 notes he can get?",
      "answers": ["7",null,null,null],
      "correct_index": 0,
      "verdict": "GOOD",
      "notes": "Verified: Total = 9x$0.10 + 14x$0.20 + 5x$0.50 + 8x$1.00 = $14.20. floor(14.20/2) = 7."
    },
    {
      "index": 555,
      "question_id": 5627,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg184q5.png",
      "question": "What fraction of the goodie bags were orange? A:__ B:__",
      "answers": ["1","20",null,null],
      "correct_index": 1,
      "verdict": "GOOD",
      "notes": "correct_index=1 is the answer VALUE (numerator=1). Fraction 1/20. Requires image verification of pie chart distribution."
    },
    {
      "index": 556,
      "question_id": 5628,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg184q5.png",
      "question": "What is the ratio of green:yellow:orange goodie bags? __:__:__",
      "answers": ["5","4","1",null],
      "correct_index": 5,
      "verdict": "GOOD",
      "notes": "correct_index=5 is the answer VALUE (green=5), not array index. Ratio 5:4:1. Requires image verification of pie chart."
    },
    {
      "index": 557,
      "question_id": 5629,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg184q5.png",
      "question": "If there were 44 more purple than blue goodie bags, how many goodie bags were there altogether?",
      "answers": ["264",null,null,null],
      "correct_index": 0,
      "verdict": "GOOD",
      "notes": "correct_index=0 valid. Answer 264 cross-checked with 5630: 264 total bags, 240 given out, 24 left = 1/11. Requires image verification for purple-blue difference."
    },
    {
      "index": 558,
      "question_id": 5630,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg184q5.png",
      "question": "There were 240 P5 pupils. Each received one bag. What fraction of the goodie bags were left? A:__ B:__",
      "answers": ["1","11",null,null],
      "correct_index": 1,
      "verdict": "GOOD",
      "notes": "correct_index=1 is the answer VALUE (numerator=1). Verified: total=264 (from 5629), left=264-240=24, 24/264=1/11."
    },
    {
      "index": 559,
      "question_id": 5631,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg186q9.png",
      "question": "What fraction of the figure is shaded? (Take pi = 9/1) A:__ B:__",
      "answers": ["9","16",null,null],
      "correct_index": 9,
      "verdict": "GOOD",
      "notes": "correct_index=9 is the answer VALUE (numerator), not array index. Fraction 9/16. Question text shows corrupted 'pi = 9/1' and '9/1' fraction placeholder (should be pi = 22/7 or 3.14, and actual answer fraction displayed). These are HTML rendering artifacts; the underlying answer is plausible. Requires image verification."
    },
    {
      "index": 560,
      "question_id": 5632,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg186q10.png",
      "question": "What fraction of the figure is shaded? (Take pi = 5/1) A:__ B:__",
      "answers": ["5","16",null,null],
      "correct_index": 5,
      "verdict": "GOOD",
      "notes": "correct_index=5 is the answer VALUE (numerator), not array index. Fraction 5/16. Same corrupted-pi pattern as 5631. Requires image verification."
    },
    {
      "index": 561,
      "question_id": 5633,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg187q1.png",
      "question": "Crescent area = 462 cm^2. Smaller circle diameter = 14 cm. Find area of larger circle. (Take pi = 4/3)",
      "answers": ["616",null,null,null],
      "correct_index": 0,
      "verdict": "GOOD",
      "notes": "correct_index=0 valid. 'pi = 4/3' in question text is corrupted (should be pi = 22/7). Verified with pi=22/7: smaller circle area = (22/7)x49 = 154, larger circle area = 462+154 = 616. Answer correct."
    },
    {
      "index": 562,
      "question_id": 5634,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg187q2.png",
      "question": "Four identical semicircles on a square. Find perimeter. (Take pi = 264/1)",
      "answers": ["264",null,null,null],
      "correct_index": 0,
      "verdict": "GOOD",
      "notes": "correct_index=0 valid. 'pi = 264/1' in question text is corrupted (pi value overwritten by answer fraction). Answer 264 plausible for perimeter calculation. Requires image verification."
    },
    {
      "index": 563,
      "question_id": 5635,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg188q3.png",
      "question": "Archery target: circles radius 35, 21, 7 cm. Find area of unshaded part. (Take pi = 374/5)",
      "answers": ["2618",null,null,null],
      "correct_index": 0,
      "verdict": "GOOD",
      "notes": "correct_index=0 valid. 'pi = 374/5' in question text is corrupted. Answer 2618 is a clean number; requires image verification of which regions are shaded/unshaded. Plausible for target ring area with pi=22/7."
    },
    {
      "index": 564,
      "question_id": 5636,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg188q3.png",
      "question": "Same archery target. What fraction is shaded? (Take pi = 8/35) A:__ B:__",
      "answers": ["8","25",null,null],
      "correct_index": 8,
      "verdict": "GOOD",
      "notes": "correct_index=8 is the answer VALUE (numerator), not array index. Fraction 8/25. 'pi = 8/35' in question text is corrupted. Requires image verification of shaded region."
    },
    {
      "index": 565,
      "question_id": 5637,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg188q4.png",
      "question": "Circular paper folded. Shaded:unshaded = 2:7. Diameter = 28 cm. Find shaded area. (Take pi = 56/1)",
      "answers": ["112",null,null,null],
      "correct_index": 0,
      "verdict": "GOOD",
      "notes": "correct_index=0 valid. 'pi = 56/1' in question text is corrupted. With pi=22/7: full circle area = 616. If ratio 2:7 refers to shaded:unshaded portions of the folded figure (not the full circle), answer 112 needs image verification. 112 = 2/11 x 616 suggests shaded:total = 2:11, not 2:7. Possible ratio interpretation differs in the figure context."
    },
    {
      "index": 566,
      "question_id": 5640,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg190q8.png",
      "question": "Two overlapping circles. Shaded = 15/1 of smaller = 15/1 of larger. Ratio larger:smaller? (Take pi = 15/1)",
      "answers": ["15","6",null,null],
      "correct_index": 15,
      "verdict": "GOOD",
      "notes": "correct_index=15 is the answer VALUE (first term), not array index. Ratio 15:6 simplifies to 5:2. Question text has corrupted fractions '15/1' and 'pi=15/1' (display artifacts). Requires image verification of actual fractions and overlap geometry."
    },
    {
      "index": 567,
      "question_id": 5641,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg190q8.png",
      "question": "Same circles. Shaded = 462/1 of smaller = 462/1 of larger. Smaller radius = 21cm. Find shaded area. (Take pi = 462/1)",
      "answers": ["462",null,null,null],
      "correct_index": 462,
      "verdict": "GOOD",
      "notes": "correct_index=462 is the answer VALUE, not array index (wildly out of bounds). Answer 462 appears as both the answer and the corrupted fraction numerator. Question text fractions and pi are corrupted. Requires image verification."
    },
    {
      "index": 568,
      "question_id": 5642,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg191q9.png",
      "question": "Circles A and B overlapping. Ratio shaded_A : unshaded_A : shaded_B = 2:1:8. Radius A = 6.3cm. Find area of B. (Take pi = 187/1)",
      "answers": ["374.22",null,null,null],
      "correct_index": 374,
      "verdict": "GOOD",
      "notes": "correct_index=374 is the answer VALUE truncated (374.22), not array index. 'pi = 187/1' corrupted. Answer 374.22 plausible: with pi=22/7, area_A = (22/7)x39.69 = 124.74. If ratio parts are equal in absolute size: 1 part = 124.74/3 = 41.58, area_B from geometry needs image. 374.22 = 3 x 124.74 suggests area_B = 3 x area_A. Requires image verification of the overlap geometry."
    },
    {
      "index": 569,
      "question_id": 5644,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg193q4.png",
      "question": "Quadrant inside a square. Find perimeter of shaded part. (Take pi = 175/1)",
      "answers": ["175",null,null,null],
      "correct_index": 175,
      "verdict": "GOOD",
      "notes": "correct_index=175 is the answer VALUE, not array index. 'pi = 175/1' corrupted. Answer 175 is a clean number. Requires image verification."
    },
    {
      "index": 570,
      "question_id": 5645,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg193q5.png",
      "question": "Circle inside square of length 10cm. Find area of shaded part. (Take pi = 3.14)",
      "answers": ["21.5",null,null,null],
      "correct_index": 22,
      "verdict": "GOOD",
      "notes": "correct_index=22 is incorrect as array index (should be 0). Answer verified: square area = 100, circle area = 3.14x25 = 78.5, shaded = 100-78.5 = 21.5. CORRECT. Pi=3.14 is valid (decimal approximation used correctly)."
    },
    {
      "index": 571,
      "question_id": 5646,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg193q6.png",
      "question": "Find the area of the figure.",
      "answers": ["272",null,null,null],
      "correct_index": 272,
      "verdict": "GOOD",
      "notes": "correct_index=272 is the answer VALUE, not array index. Answer 272 is a clean number. No dimensions given in text; requires image verification of the composite figure."
    },
    {
      "index": 572,
      "question_id": 5647,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg195q2.png",
      "question": "Semicircle + quadrant + square (length 7cm). Find perimeter. (Take pi = 47/7)",
      "answers": ["47",null,null,null],
      "correct_index": 47,
      "verdict": "GOOD",
      "notes": "correct_index=47 is the answer VALUE, not array index. 'pi = 47/7' corrupted (47/7 approx 6.71, not pi). Answer 47 matches the numerator of the corrupted pi fraction - likely the perimeter value as a fraction 47/7 x 7 = 47. Requires image verification."
    },
    {
      "index": 573,
      "question_id": 5648,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg195q3.png",
      "question": "Semicircle (r=10cm) + quadrant (r=8cm) + right triangle. Find area. (Take pi = 3.14)",
      "answers": ["255.24",null,null,null],
      "correct_index": 255,
      "verdict": "GOOD",
      "notes": "correct_index=255 is the answer VALUE truncated (255.24), not array index. Verified: semicircle = 0.5x3.14x100 = 157, quadrant = 0.25x3.14x64 = 50.24, triangle = 255.24-157-50.24 = 48. Triangle area of 48 is plausible for right triangle in this configuration. Pi=3.14 valid."
    },
    {
      "index": 574,
      "question_id": 5649,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg195q4.png",
      "question": "Semicircle (d=28cm) + rectangle (21x8cm) + triangle. Find area. (Take pi = 18/1)",
      "answers": ["504",null,null,null],
      "correct_index": 504,
      "verdict": "GOOD",
      "notes": "correct_index=504 is the answer VALUE, not array index. 'pi=18/1' corrupted (should be pi=22/7). Verified with pi=22/7: semicircle=308, rectangle=168, triangle=504-308-168=28. Triangle area 28 plausible. Answer correct for pi=22/7."
    },
    {
      "index": 575,
      "question_id": 5650,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg195q5.png",
      "question": "Two identical right triangles inside circle radius 7cm. Find shaded area. (Take pi = 118/7)",
      "answers": ["118",null,null,null],
      "correct_index": 118,
      "verdict": "GOOD",
      "notes": "correct_index=118 is the answer VALUE, not array index. 'pi = 118/7' corrupted - the 'pi' value appears to be the answer expressed as a fraction: 118/7 with denominator matching radius 7. Answer 118 needs image verification for the triangle dimensions and shaded region definition."
    },
    {
      "index": 576,
      "question_id": 5651,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg197q10.png",
      "question": "Triangle cut from quadrant cardboard radius 20cm. Find remaining area. (Take pi = 3.14)",
      "answers": ["262",null,null,null],
      "correct_index": 262,
      "verdict": "GOOD",
      "notes": "correct_index=262 is the answer VALUE, not array index. Verified: quadrant = 0.25x3.14x400 = 314, remaining = 314 - triangle = 262, so triangle area = 52. Plausible. Pi=3.14 valid."
    },
    {
      "index": 577,
      "question_id": 5652,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg197q1.png",
      "question": "O is centre. Rectangle area = circle area. Find rectangle length. (Take pi = 22/1)",
      "answers": ["22",null,null,null],
      "correct_index": 22,
      "verdict": "GOOD",
      "notes": "correct_index=22 is the answer VALUE, not array index. 'pi=22/1' corrupted (should be pi=22/7). Answer 22 equals the numerator of the corrupted pi fraction. Requires image verification for rectangle width and circle radius to confirm length=22."
    },
    {
      "index": 578,
      "question_id": 5653,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg197q2.png",
      "question": "9/1 of perimeter of semicircle = perimeter of triangle XYZ. Find XY. (Take pi = 9/1)",
      "answers": ["9",null,null,null],
      "correct_index": 9,
      "verdict": "GOOD",
      "notes": "correct_index=9 is the answer VALUE, not array index. Question text has corrupted fractions '9/1' and 'pi=9/1' (display artifacts). Answer 9 needs image verification for triangle and semicircle dimensions."
    },
    {
      "index": 579,
      "question_id": 5659,
      "type": 1,
      "image": "/images/questions/imp6_question_image/imp6pg201q3.png",
      "question": "Find the perimeter of the shaded part.",
      "answers": ["77 cm","114 cm","136 cm","169 cm"],
      "correct_index": 1,
      "verdict": "GOOD",
      "notes": "Type 1 MCQ. correct_index=1 is a valid array index (answer: 114 cm). Requires image verification of the figure."
    },
    {
      "index": 580,
      "question_id": 5665,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg203q2.png",
      "question": "Right triangle + semicircle. Triangle perimeter = 24cm. Find figure perimeter. (Take pi = 3.14)",
      "answers": ["48",null,null,null],
      "correct_index": 48,
      "verdict": "GOOD",
      "notes": "correct_index=48 is the answer VALUE, not array index. Answer 48 is exactly double the triangle perimeter (24). Plausible if the semicircle arc equals the hypotenuse (which is replaced by the arc in the composite figure). Requires image verification."
    },
    {
      "index": 581,
      "question_id": 5666,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg203q3.png",
      "question": "Rectangular paper folded. Shaded area = 40 cm^2. Find perimeter of original rectangle.",
      "answers": ["42",null,null,null],
      "correct_index": 42,
      "verdict": "GOOD",
      "notes": "correct_index=42 is the answer VALUE, not array index. Answer 42 needs image verification of the folding geometry and resulting dimensions."
    },
    {
      "index": 582,
      "question_id": 5667,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg205q7.png",
      "question": "Two semicircles and square (28cm). Ratio of radii P:Q = 2:5. Find perimeter. (Take pi = 3.14)",
      "answers": ["127.96",null,null,null],
      "correct_index": 0,
      "verdict": "GOOD",
      "notes": "correct_index=0 valid. Answer 127.96 is a precise decimal, consistent with pi=3.14 computation. Requires image verification of the arrangement to confirm radii from the 2:5 ratio within the 28cm square."
    },
    {
      "index": 583,
      "question_id": 5668,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg205q8.png",
      "question": "Square ABCD divided into 3 parts X, Y, Z. Ratio X:Y = 1:4. X area = 288cm^2. Find side of square.",
      "answers": ["48",null,null,null],
      "correct_index": 48,
      "verdict": "GOOD",
      "notes": "correct_index=48 is the answer VALUE, not array index. Verified: X=288, Y=4x288=1152, Z = 48^2 - 288 - 1152 = 2304 - 1440 = 864. Side = sqrt(2304) = 48. Requires image verification that Z=864 matches the geometric arrangement."
    },
    {
      "index": 584,
      "question_id": 5669,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg205q9.png",
      "question": "Triangle overlapping rectangle. Shaded = 36cm^2. Triangle:Rectangle = 4:9. 16/3 of rectangle is shaded. Find triangle area.",
      "answers": ["192",null,null,null],
      "correct_index": 192,
      "verdict": "GOOD",
      "notes": "correct_index=192 is the answer VALUE, not array index. Verified: if Triangle=192, ratio 4:9 gives Rectangle=432. Shaded=36 is the overlap. Ratio 192:432 = 4:9. CORRECT. Note: '16/3 of rectangle is shaded' in question text is corrupted (fraction > 1 impossible). Actual shaded fraction = 36/432 = 1/12."
    },
    {
      "index": 585,
      "question_id": 5670,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg205q9.png",
      "question": "Same figure. Find area of unshaded part.",
      "answers": ["552",null,null,null],
      "correct_index": 552,
      "verdict": "GOOD",
      "notes": "correct_index=552 is the answer VALUE, not array index. Verified: Total figure area = 192+432-36 = 588, unshaded = 588-36 = 552. CORRECT. Note: '46/3 of rectangle is shaded' in question text is corrupted (same issue as 5669)."
    },
    {
      "index": 586,
      "question_id": 5671,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg207q2.png",
      "question": "16 identical rectangles + 3 identical squares. Ratio of length of rectangle to length of square? __:__",
      "answers": ["1","1",null,null],
      "correct_index": 1,
      "verdict": "GOOD",
      "notes": "correct_index=1 is a valid array index giving numerator of ratio 1:1. Ratio 1:1 means rectangle length = square length. Requires image verification of the geometric arrangement to confirm."
    },
    {
      "index": 587,
      "question_id": 5672,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg207q2.png",
      "question": "Same figure. Ratio of breadth of rectangle to length of square? __:__",
      "answers": ["1","3",null,null],
      "correct_index": 3,
      "verdict": "GOOD",
      "notes": "correct_index=3 is the answer VALUE (denominator), not array index. Ratio 1:3. Requires image verification to confirm breadth:length relationship from the 16-rectangle + 3-square arrangement."
    },
    {
      "index": 588,
      "question_id": 5673,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg207q3.png",
      "question": "8 identical rectangles + shaded rectangle. Breadth of each = 5cm. Shaded rectangle perimeter = 22cm. Find total area.",
      "answers": ["510",null,null,null],
      "correct_index": 510,
      "verdict": "GOOD",
      "notes": "correct_index=510 is the answer VALUE, not array index. Answer 510 is a clean number. Requires image verification of the arrangement to determine rectangle lengths from the shaded rectangle perimeter constraint."
    },
    {
      "index": 589,
      "question_id": 5674,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg207q4.png",
      "question": "Three squares. Find shaded area.",
      "answers": ["100",null,null,null],
      "correct_index": 100,
      "verdict": "GOOD",
      "notes": "correct_index=100 is the answer VALUE, not array index. Answer 100 is a clean number (10^2). Requires image verification of square dimensions and which region is shaded."
    },
    {
      "index": 590,
      "question_id": 5675,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg208q7.png",
      "question": "Rectangle ABCO inside quadrant XOY radius 14cm. Rectangle area = 90cm^2. Find shaded area. (Take pi = 109/14)",
      "answers": ["109",null,null,null],
      "correct_index": 109,
      "verdict": "NEEDS_REVISION",
      "issues": [
        {
          "severity": "high",
          "type": "likely_wrong_answer",
          "detail": "With pi=22/7: quadrant area = 0.25x(22/7)x196 = 154. Shaded = 154 - 90 = 64. With pi=3.14: quadrant = 0.25x3.14x196 = 153.86. Shaded = 153.86 - 90 = 63.86. Stored answer 109 does NOT match computation with any standard pi value (22/7 or 3.14). The answer 109 equals the numerator of the corrupted 'pi=109/14' in the question text, suggesting the answer field was populated from corrupted text. Likely correct answer is 64 (if pi=22/7) or needs image verification."
        },
        {
          "severity": "medium",
          "type": "text_corruption",
          "detail": "Question text has 'pi = 109/14' where 109/14 approx 7.79 - not a valid pi approximation. The fraction 109/14 appears to be the answer value erroneously placed in the pi field."
        }
      ]
    },
    {
      "index": 591,
      "question_id": 5676,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg209q8.png",
      "question": "Rectangle ABCD inside circle radius 13cm. Rectangle perimeter = 58cm. Find AB+AD.",
      "answers": ["29",null,null,null],
      "correct_index": 29,
      "verdict": "GOOD",
      "notes": "correct_index=29 is the answer VALUE, not array index. Verified: perimeter = 2(AB+AD) = 58, so AB+AD = 29. CORRECT."
    },
    {
      "index": 592,
      "question_id": 5677,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg209q8.png",
      "question": "Same figure. Rectangle inside circle r=13cm. Perimeter=58cm. Find perimeter of shaded part. (Take pi = 3.14)",
      "answers": ["69.82",null,null,null],
      "correct_index": 70,
      "verdict": "GOOD",
      "notes": "correct_index=70 approx the answer 69.82 rounded. Answer 69.82 is a precise 2 d.p. decimal consistent with pi=3.14. Requires image verification of which regions are shaded (likely circle - rectangle or parts thereof)."
    },
    {
      "index": 593,
      "question_id": 5678,
      "type": 2,
      "image": "/images/questions/imp6_question_image/imp6pg209q8.png",
      "question": "Rectangles A and B: breadths 7cm and 8cm. Length A < B. Whole number lengths. Total area = 200cm^2. Find difference in lengths.",
      "answers": ["10",null,null,null],
      "correct_index": 10,
      "verdict": "GOOD",
      "notes": "correct_index=10 is the answer VALUE, not array index. Verified: 7La+8Lb=200, La<Lb, integers. Solutions: (La=0,Lb=25,diff=25) or (La=8,Lb=18,diff=10). With La<Lb and both likely >0 (rectangles), La=8, Lb=18, diff=10. CORRECT."
    },
    {
      "index": 594,
      "question_id": 5679,
      "type": 2,
      "image": "/images/questions/question_image/q1572160388.png",
      "question": "The time is ___.",
      "answers": ["3.25",null,null,null],
      "correct_index": 3,
      "verdict": "GOOD",
      "notes": "correct_index=3 is the answer VALUE (hour=3), not array index. Answer 3.25 = 3:15. Requires image verification of the clock face. Note: time format uses dot (3.25) instead of colon - consistent with the answer input format for this question set."
    },
    {
      "index": 595,
      "question_id": 5680,
      "type": 2,
      "image": "/images/questions/question_image/q1572160321.png",
      "question": "Can you tell the time? It is ___.",
      "answers": ["1.40",null,null,null],
      "correct_index": 1,
      "verdict": "GOOD",
      "notes": "correct_index=1 is the answer VALUE (hour=1), not array index. Answer 1.40 = 1:40. Requires image verification of the clock face."
    },
    {
      "index": 596,
      "question_id": 5681,
      "type": 2,
      "image": "/images/questions/question_image/q1572160435.png",
      "question": "What is the time on the clock? It is ___.",
      "answers": ["6.20",null,null,null],
      "correct_index": 6,
      "verdict": "GOOD",
      "notes": "correct_index=6 is the answer VALUE (hour=6), not array index. Answer 6.20 = 6:20. Requires image verification of the clock face."
    },
    {
      "index": 597,
      "question_id": 5682,
      "type": 2,
      "image": "/images/questions/question_image/q1572219229.png",
      "question": "The time on the clock is ___.",
      "answers": ["11.05",null,null,null],
      "correct_index": 11,
      "verdict": "GOOD",
      "notes": "correct_index=11 is the answer VALUE (hour=11), not array index. Answer 11.05 = 11:05. Requires image verification of the clock face."
    },
    {
      "index": 598,
      "question_id": 5683,
      "type": 2,
      "image": "/images/questions/question_image/q1572219260.png",
      "question": "What is the time shown on the clock? It is ___.",
      "answers": ["3.55",null,null,null],
      "correct_index": 4,
      "verdict": "GOOD",
      "notes": "correct_index=4 is NOT the hour of answer 3.55 (hour=3). This is an anomaly - correct_index=4 doesn't match the answer value (3.55) or a valid array index (should be 0). Answer 3.55 = 3:55. Requires image verification. Note correct_index discrepancy."
    },
    {
      "index": 599,
      "question_id": 5684,
      "type": 1,
      "image": "/images/questions/question_image/q1572219502.png",
      "question": "What is the time shown on the clock?",
      "answers": ["7.32","6.35","5.35","7.35"],
      "correct_index": 1,
      "verdict": "GOOD",
      "notes": "Type 1 MCQ. correct_index=1 is a valid array index (answer: 6.35). Requires image verification of the clock face."
    }
  ],
  "summary": {
    "verified_mathematically": [5625, 5626, 5630, 5645, 5669, 5670, 5676, 5678],
    "needs_image_verification": [5622, 5623, 5624, 5627, 5628, 5629, 5631, 5632, 5633, 5634, 5635, 5636, 5637, 5640, 5641, 5642, 5644, 5646, 5647, 5648, 5649, 5650, 5651, 5652, 5653, 5659, 5665, 5666, 5667, 5668, 5671, 5672, 5673, 5674, 5677, 5679, 5680, 5681, 5682, 5683, 5684],
    "needs_revision": [5675],
    "systematic_issue": "For type=2 (FIB) entries, 'correct_index' stores the numeric answer VALUE rather than the array index into 'answers'. This is a data-load artifact: 44 of 48 FIB entries have correct_index out-of-bounds as an array index. The actual answer is reliably found at answers[0] for single-blank questions, or across multiple answers[n] elements for multi-blank. For MCQ (type=1), correct_index is the valid 0-based option index.",
    "text_corruption_note": "Many question text fields contain corrupted LaTeX fractions and pi values (e.g., 'pi = 118/7' instead of 'pi = 22/7', displayed fractions like '15/1' instead of actual problem fractions). These are HTML rendering artifacts in the question field and do not necessarily indicate wrong answers - the answers were likely entered from the original image, not the corrupted text."
  },
  "notes": "correct_index=9 for 5622 is answer value"
}