New Enroll for RBI, PFRDA & NABARD Intro Class! April 18 at 9:15 PM

    Question

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

    1                 5         

    13             25                          41               ?
    A 71 Correct Answer Incorrect Answer
    B 81 Correct Answer Incorrect Answer
    C 61 Correct Answer Incorrect Answer
    D 63 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    02 + 12 = 1 12 + 22 = 5 22 + 32 = 13 32 + 42 = 25 42 + 52 = 41 52 + 62 = 61

    Practice Next