1^2+ 2^2 +3^2 +4^2 ............... 20^2 ? – McqOptions

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1.	1^2+ 2^2 +3^2 +4^2 ............... 20^2 ?
A.	2657
B.	89654
C.	2870
D.	9087
Answer» D. 9087

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