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      Question

      What will come in place of the question mark (?) in the

      following series? 5, 12, ?, 105, 430, 2161
      A 111 Correct Answer Incorrect Answer
      B 32 Correct Answer Incorrect Answer
      C 87 Correct Answer Incorrect Answer
      D 69 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      5 * 1 + 7 = 12

      12 * 2 + 8 = 32

      32 * 3 + 9 = 105

      105 * 4 + 10 = 430

      430 * 5 + 11 = 2161

      So, (?) = 32

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