1.

Find `1^(2) + 2^(2) +.................+ 10^(2)`

Answer» Correct Answer - 385
`1^(2) + 2^(2) + 3^(2) ...............+ 10^(2)`
`s= (n(n+1)(2n+1))/(6) = ((10)(11)(21))/(6) = 385`


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