{
  "hints": [
    "Look at the difference between the first two terms: 1.4 - 1.2 = 0.2.",
    "The pattern adds 0.2 each time. So the missing number after 1.4 is 1.4 + 0.2 = 1.6.",
    "Continue the pattern: after 2.0, add 0.2 to get 2.2. The sequence is 1.2, 1.4, 1.6, 1.8, 2.0, 2.2."
  ]
}