Question 27
What is the sum of all the coefficients of the terms of the multinomial expansion of $(a_1+a_2+a_3+\cdots+a_k)^n$, where k and n are both natural numbers? (Express your answer in terms of k and n.)
Input format: use pi, sqrt(...), ^ for powers, * for multiplication and / for division as needed.
Input format: use pi, sqrt(...), ^ for powers, * for multiplication and / for division as needed.