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    Question

    What should come in place of the question mark (?) in the following number series?

    31                          

    16.5                        18                           ?                              60.5                        154.25
    A 32.5 Correct Answer Incorrect Answer
    B 23 Correct Answer Incorrect Answer
    C 19.5 Correct Answer Incorrect Answer
    D 29 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    31 × 0.5 + 1 = 16.5 16.5 × 1 + 1.5 = 18 18 × 1.5 + 2 = 29 29 × 2 + 2.5 = 60.5 60.5 × 2.5 + 3 = 154.25

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