Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Let the sixth term in the binomial expansion of 
, in the increasing powers of 
, be 21. If the binomial coefficients of the second, third and fourth terms in the expansion are respectively the first, third and fifth terms of an A.P., then the sum of the squares of all possible values of x is __________
Text Solution
Verified by ExpertsThe correct answer is:
4
(4)
................(1)
are in A.P.
2. 
Solving from m, we get m=2 (rejected), 7
Put in equation (1)
21. 
──────────────────────────────────────────────────────────────────────────────────────────
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
If , then is equal to
If a is the coefficient of in the Binomial expansion of , then is equal to
Let K be the sum of the coefficients of the odd powers of x in the expansion of . Let a be the mid…
If the coefficient of in the expansion of is equal to the coefficient of in the expansion of , …
The coefficient of in is
Let and . If denotes the greatest integer , then