[" If the second term of the expansion "],[" (1) "4]

If the second term of the expansion [a^((1)/(13))+(a)/(sqrt(a^(-1)))]^(n) is 14a^(5/2), then the value of (^nC_(3))/(^nC_(2)) is.

Find the value of the second largest term in the expansion of (4+5x)^(20) when x = 1//3

Find the value of the second largest term in the expansion of (4+5x)^(20) when x = 1//3

Sum of coefficients of expansion of B is 6561 . The difference of the coefficient of third to the second term in the expansion of A is equal to 117 . The ratio of the coefficient of second term from the beginning and the end in the expansion of B , is

Sum of coefficients of expansion of B is 6561 . The difference of the coefficient of third to the second term in the expansion of A is equal to 117 . The ratio of the coefficient of second term from the beginning and the end in the expansion of B , is

Second term in the expansion of (2x+3y)^(5)=

If the number of terms in the expansion of (1-2/x+4/(x^(2)))^n x ne 0 , is 28 , then the sum of coefficient of all the terms in this expansion, is