Find the sum of 25 cubes starting from 1.

hereSum of the cubes of first 25 natural numbers

i.e., 13 + 23 + 33 + 43 + 53 + .... + 253

We know the sum of the cubes of first n natural numbers (S) = {n(n+1)2}2

Here n = 25

Therefore, the sum of the cubes of first 25 natural numbers = {25(25+1)2}2

= {12×262}2

= {25 × 13}2

= (325)2

= 105625

Hope this helps...
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The 2 written after brackets is actually ^2

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