In the expansion of `[2-2x+ x^2]^9` (A) Number of distinct terms is 10 (C) Sum of coefficients is 1 (B) Number of distinct terms is 55 (D) Coefficient of `x^4` is 97

In the expansion of (x^(2)+1+(1)/(x^(2)))^(n),n in N, (a)number of terms is 2n+1 (b)coefficient of constant terms is 2^(n-1) (c)coefficient of x^(2n-1)isn (d)coefficient of x^(2) in n

The number of distinct terms in the expansion of f(x+2y-3z+5w-7u)^(n) is

In the expansion of (1+x)^(n), the sum of the coefficients of the terms in even positions is 2^(n-1)

The number of distinct terms in the expansion of (1+ 3x + 3x^(2) + x^(3))^(7) is

The sum of the coefficients of the first 10 terms in the expansion of (1-x)^(-3) is

If in the expansion of (x^3-1/x^2)^n the sum of the coefficients of x^5 and x^10 is 0 , then the coefficient of :the third term

The number of distinct terms in the expansion of (x+y^(2))^(13)+(x^(2)+y)^(14) is

In the expansion of (a^(1/3)+b^(1/9))^6561 , where 'a' and 'b' are distinct prime numbers, then the number of irrational terms are