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

    Question

    Four number-pairs have been given, out of which three

    are alike in some manner and one is different. Select the number-pair that is different.
    A 15 - 225 Correct Answer Incorrect Answer
    B 18 - 324 Correct Answer Incorrect Answer
    C 21 - 420 Correct Answer Incorrect Answer
    D 12 - 144 Correct Answer Incorrect Answer
    E 17 - 289 Correct Answer Incorrect Answer

    Solution

    The logic followed here is: In all of the above number pairs, the second number is the square of the first number, except for one pair. 15 × 15 = 225

    18 × 18 = 324

    21 × 21 ≠ 420

    12 × 12 = 144

    17 × 17 = 289

    The number pair (21 - 420) does not follow the pattern.

    Practice Next