Published by:
CGP EDU Academic Team
Published on: August 12, 2026
If
terms, then
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, b, d)
Let
denote the
th term of the series 3, 7, 13, 21, … and






Thus, the sum of the first
terms of the given series is








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