Q. In the expansion of $(1 + x)^{30}$, the sum of the coefficients of odd powers of $x$ is
A) $2^{30}$
B) $2^{31}$
C) 0
D) $2^{29}$
Explanation
(d)
Sum of coefficient of odd powers of $x$ in $(1 + x)^{30}$
$= C_{1} + C_{3} + ... + C_{29} = 2^{30 - 1} = 2^{29}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.