Problem: The sum of the numerical coefficients of all the terms in the expansion of is:
Answer Choices:
A.
B.
C.
D.
E.
Solution:
Since the expansion represents the binomial for all values of and , it represents the binomial for and . For these values of and each term in the expansion has the same value as the numerical coefficient of the term. Therefore, the sum of the numerical coefficients of all the terms in the expansion equals .