{
  "question_id": 1291,
  "hints": [
    {"hint_level": 1, "hint": "The answer (18) is smaller than the first number (20). Which operation makes numbers smaller?"},
    {"hint_level": 2, "hint": "Subtraction makes a number smaller. Try 20 - 2."},
    {"hint_level": 3, "hint": "20 - 2 = 18, so the missing operator is - (minus)."}
  ]
}