Hassan M. answered • 10/26/13
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1+2*2+3*3+4*4=1+4+9+16=30
The sum (total) is 30
Prasenjeet S.
asked • 10/26/13Complex sequence
Given sequence is 1+2+2+3+3+3+4+4+4+4 find sum.
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1² + 2² + 3² + 4² + .... + n² = n(n+1)(2n+1)/6
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