What is the sum of all the coefficients in the expansion of `(1+x)^(n)` ?

What is the sum of the coefficients in the expansion of (1+x)^(n) ?

What is the sum of the binomial coefficients in the expansion of (1+x)^(50)

If the sum of the coefficients in the expansion of (1 -3x + 10x^2)^(n) is a and the sum of the coefficients in the expansion of (1 - x^(2))^(n) is b , then

The sum of the coefficient in the expansion of (1 + x+x^2)^n is

The sum of the coefficient in the expansion of (1 + x+x^2)^n is

If the sum of all the coefficients in the expansion of (3x-2y+2z)^(n) is 729, then the value of "n" is

The sum of the coefficient in the expansion of (1+ax-2x^(2))^(n) is