Published by:
CGP EDU Academic Team
Published on: August 13, 2026
11 3 + 12 3 + 13 3 + ...+20 3 -
Text Solution
Verified by ExpertsThe correct answer is:
B
11 3 +12 3 +....20 3 =(1 3 +2 3 +...20 3 ) – (1 3 + 2 3 ...10 3 )
= (20×21/2) 2 – (10×10/2) 2 ⇒ 44100 – 3025 = 41075
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