New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Select the number from among the given options that can

    replace the question mark (?) in the following series. 2, 13, 29, 55, 96, 157, 243, ?
    A 387 Correct Answer Incorrect Answer
    B 378 Correct Answer Incorrect Answer
    C 359 Correct Answer Incorrect Answer
    D 395 Correct Answer Incorrect Answer

    Solution

    2, 13, 29, 55, 96, 157, 243,  ? First difference between 2 and 13 is 11, 13 and 29 is 16... and So on 157 and 243 is 86. Now, the difference between the differences is 5, 10, 15, 20, 25, and 30 respectively. So, the final answer is 359.

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