Question 376 of 519EasyMCQ
The value of 12+32+52+⋯+252 is: Solutions · 1
Official solution
This is ∑n=113(2n−1)2, using the standard identity ∑n=1N(2n−1)2=3N(2N−1)(2N+1).
\[\frac{13\times25\times27}{3}=13\times225=2925.\] Answer the question to unlock