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

    Question

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

    81, 90, 108, 135, 171,

    ?
    A 246 Correct Answer Incorrect Answer
    B 232 Correct Answer Incorrect Answer
    C 224 Correct Answer Incorrect Answer
    D 216 Correct Answer Incorrect Answer

    Solution

    81 + 9 = 90 90 + 18 = 108 108 + 27 = 135 135 + 36 = 171 171 + 45 = 216

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