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  1. 106 x 106 - 94 x 94 = ?

    2. A.

    2400
    B.

    2000
    C.

    1904
    D.

    1906
    E.

    None of these

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    Answer : Option A

    Explanation :

    106 x 106 - 94 x 94    = (106)2 - (94)2
    = (106 + 94)(106 - 94)    [Ref: (a2 - b2) = (a + b)(a - b)]
    = (200 x 12)
    = 2400.

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