1.

Find the sum of the following (""^(15)C_(1))/(""^(15)C_(0))+2(""^(15)C_(2))/(""^(15)C_(1))+3(""^(15)C_(3))/(""^(15)C_(2))+......+15(""^(15)C_(15))/(""^(15)C_(14))

Answer»

SOLUTION :`B.O =(N_(b)-N_(a))/(2)`


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