Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Positive value of n satisfying 2 + (6.2 2 – 4.2)
+ (6.3 2 – 4.3) + ......... + (6.n 2 – 4.n) = 140 is -
Text Solution
Verified by ExpertsThe correct answer is:
B
2 + 6(2 2 + 3 2 + 4 2 ....+ n 2 ) – 4(2 + 3 + 4 ....+ n) = 140
Solving n = 4
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