In the expansion of `(1+ x)^n` which of the following is correct

In the expansion of (4-4x+x^(2))^(10) , which of the following is correct?

In the expansion of (4-4x+x^(2))^(10) , which of the following is correct?

If the coefficients of a^(m) and a^(n) in the expansion of (1+a)^(m+n) are alpha and beta then which one of the following is correct ?

f(x) = (x^n + (pi/3)^n)/(x^(n-1) + (pi/3)^(n-1)) ,(n is an even number, then which of the following is correct

f(x)=(x^(n)+((pi)/(3))^(n))/(x^(n-1)+((pi)/(3))^(n-1)),(n is an even number then which of the following is correct

'Prove that the co-efficient of x^n of the expansion of (1+x)^(2n) is the double of the coefficient of x^n of the expansion of '(1+x)^(2n-1)'