Duration: 4:23

187 views

0

Let \( \left(1+x+2 x^{2}\right)^{20}=a_{0}+a_{1} x+a_{2} x^{2}+\ldots+a_{40} x^{40} \) then \( a_{1}+a_{3}+a_{5}+\ldots+a_{37} \) is equal to
P
(a) \( 2^{20}\left(2^{20}-21\right) \)
[JEE Main-2021 (March)]
(V)
(c) \( 2^{19}\left(2^{20}+21\right) \)
(b) \( 2^{19}\left(2^{20}-21\right) \)
(d) \( 2^{20}\left(2^{20}+21\right) \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live