New Enroll in RBI Gr B 2025 Exclusive New Batch on March 18

    Question

    Study the given pattern carefully and select the number

    from among the given options that can replace the question mark (?) in it. 11               15           9 14               16           ? 75              31           88
    A 25 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 13 Correct Answer Incorrect Answer
    D 22 Correct Answer Incorrect Answer

    Solution

    First column = (14 + 11) x (14 – 11) = 25 x 3 = 75 Second column = (16 + 15) x (16 – 15) = 31 x 1 = 31 First column = (y + 9) x (y – 9) = 88 → y ² – 9 ² = 88 → y ² – 81 = 88 → y ² = 88 + 81 → y ² = 169 → y = 13

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