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  1. 287 x 287 + 269 x 269 - 2 x 287 x 269 = ?

    2. A.

    534
    B.

    446
    C.

    354
    D.

    324
    E.
    None of these

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    Answer : Option D

    Explanation :

    Given Exp. = a2 + b2 - 2ab, where a = 287 and b = 269
      = (a - b)2 = (287 - 269)2
      = (182)
      = 324

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