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The value of ((""^(50)C(0))/(1)+(""^(50)...

The value of `((""^(50)C_(0))/(1)+(""^(50)C_(2))/(3)+(""^(50)C_(4))/(5)+….+(""^(50)C_(50))/(51))` is :

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The value of ""^(50)C_(4)+sum_(r=1)^(6)""^(56-r)C_(3) , is

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If ""^(50)C_(r) = ""^(50)C_(r+2) ,find r.

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