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

    Question

    Simplify the following expression:

    (814-1)/82×80× (38+1)
    A 2 Correct Answer Incorrect Answer
    B 1 Correct Answer Incorrect Answer
    C -1 Correct Answer Incorrect Answer
    D -2 Correct Answer Incorrect Answer

    Solution

    a=81 and b =1 (a4-b4) = (a²+b²) (a+b) (a-b) ((81)4 – 14)/82×80× (38+1) = ((81)2 +1) (81+1) (81-1) / 82×80× (38+1) = ((34)2+1) ×82×50 /82×80× (38+1) = (38+1)/ (38+1) =1.

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