[" 13."],[" (िe "quad =C(0)+^(n)C(1)+^(n...

[" 13."],[" (िe "quad =C_(0)+^(n)C_(1)+^(n)C_(2)+...+^(n)C_(n)=2^(n)],[quad " नहा "quad ^(n)C_(T)=(n!)/(n!(n-r)!)" तथा "n!=123...n]

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