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ਸਾਰੇ nge1 ਲਈ, ਸਿੱਧ ਕਰੋ ਕਿ 1^2+ 2^2 + 3^2...

ਸਾਰੇ `nge1` ਲਈ, ਸਿੱਧ ਕਰੋ ਕਿ `1^2+ 2^2 + 3^2+ 4^2+. . . + n^2 =(n(n+1)(2n+1))/6`

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