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     EduGorilla 
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    In the expansion of the following expression 1 + ( 1 + x) + (1 + x)2 + …..+ (1 + x)n, the coefficient of xk (0  k  n) is

    Options :-

    1. n + 1Ck +1
    2. nCk
    3. nCn -  k - 1
    4. None of these
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Reply To: In the expansion of the following expression 1 + ( 1 + x) + (1 + x)2 + …..+ (1 + x)n, the coeffici….
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