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13, 32, 24, 43, 35, ?, 46, 65, 57, 76

  • A.45
  • B.52
  • C.54
  • D.55

Answer: C

Correct answer: 54

Two series alternate, each rising by eleven. The first, at the odd places, runs 13, 24, 35, 46, 57; the second, at the even places, runs 32, 43, …, 65, 76. The missing term belongs to the second, so \[ 43 + 11 = \mathbf{54} \]

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