The middle term in expansion of `(x+a)^(6)` .If 'n' even is

Find the middle term in the expansion of (1+x)^(2n)

The coefficient of middle term in the expansion of (1+x)^(n) when n is even,is

The ratio of the coefficient of the middle term in the expansion of (1+x)^(20) and the sum of the coefficients of two middle terms in expansion of (1+x)^(19) is _____ .

Write the coefficient of the middle term in the expansion of (1+x)^(2n) .

Find the middle term in the expansion of (x +1/x)^4

If 'n' is even then middle term in the expression of (x+a)^(n) is

Middle term in the expansion of (1+x)^(4n) is (AA n in N)