Question

The sum of the numerical coefficients in the expansion of the binomial $(a+b{)}^6$ is:

• A. $32$
• B. $16$
• C. $64$
• D. $48$
• E. $7$

Answer 1

Answer: (C)

$64$

$(a+b{)}^6$

Put a = 1, b = 1 to find the sum of the numerical coefficients in the expansion of $(a+b{)}^6$.

$\therefore$ Sum of numerical coefficients = $(1+1{)}^6=2^6=64$