if n is even and the value of nCr is maximum then r=

If r is allowed to vary, find the value of r for which "^nC_r is maximum.

If n=7 and r= 5, then the value of ""^nC_r is :

If n=5 and r= 3, then the value of ""^nC_r is :

Find the value of "^nC_(r-1)//"^nC_r

If "^(2n)C_3 : "^nC_2 = 44:3 , then for which of the following values of r, the value of "^nC_r will be 15

.^(2n)C_3:^nC_2=44:3, then for which of the following values of r, the value of .^nC_r will be 15

If ""^(2n)C_3:""^nC_2=44:3 , then for which of the following values of r, the value of ""^nC_r will be 15 ?

If n is a positive integer and C_r = ""^nC_r then find the value of sum_(x = 1)^n r^2 ((C_r)/(C_(r - 1)) )

If n is a positive integer and C_4 = ""^nC_r then find the value of sum_(x = 1)^n r^2 ((C_r)/(C_(r - 1)) )