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    Question

    Which of the following numbers will replace the question

    mark (?) in the given series? 124, 129, 136, 145, 156, ?
    A 168 Correct Answer Incorrect Answer
    B 169 Correct Answer Incorrect Answer
    C 172 Correct Answer Incorrect Answer
    D 165 Correct Answer Incorrect Answer

    Solution

    ATQ, The differences between consecutive numbers are: 129 - 124 = 5 136 - 129 = 7 145 - 136 = 9 156 - 145 = 11 The differences are increasing by 2 each time (5, 7, 9, 11). The next difference will be 13. So, 156 + 13 = 169. The next number is 169.

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