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 series?

    12, 24, 46, 78, 120,

    ?
    A 125 Correct Answer Incorrect Answer
    B 172 Correct Answer Incorrect Answer
    C 165 Correct Answer Incorrect Answer
    D 115 Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, 12 + 12 = 24 24 + 22 = 46 46 + 32 = 78 78 + 42 = 120 120 + 52 = 172

    Practice Next