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     EduGorilla 
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    If n is a positive integer and Ck = nCk, then

    Σ k = 1 n  k 3   C k C k 1 2

      equals

    Options :-

    1. n + 1   n + 2 1 2
    2. n + 1 2 n + 2 1 2
    3. n + 1   n + 2 2 1 2
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Reply To: If n is a positive integer and Ck = nCk, then Σ k = 1 n  k 3   C⁡ k C⁡ ….
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