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2, 5, 9, ?, 20, 27

  • A.14
  • B.16
  • C.18
  • D.24

Answer: A

Correct answer: 14

The gaps between the terms increase by one each time: \[ 5-2=3,\quad 9-5=4,\quad \_-9=5,\quad 20-\_=6,\quad 27-20=7 \] so the missing term is \( 9 + 5 = \mathbf{14} \).

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