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

    Question

    Find the missing number in the following number series:

    15      8      9      15      32     

     ?       250.5
    A 125 Correct Answer Incorrect Answer
    B 82.5 Correct Answer Incorrect Answer
    C 75 Correct Answer Incorrect Answer
    D 105.5 Correct Answer Incorrect Answer

    Solution

    15 x 0.5 + 0.5 = 8  8 x 1 + 1 = 9  9 x 1.5 + 1.5 = 15 15 x 2 + 2 = 32  32 x 2.5 + 2.5 = 82.5   82.5 x 3 + 3 = 250.5

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