1.

Find the sum of the square of first 11 natural numbers​

Answer»

Step-by-step explanation:

Sum of squares of first 11 NATURAL numbers

n ( n + 1 ) ( 2n + 1 )

S = ------------------------

6

11 ( 11 + 1 ) ( 22 + 1 )

= ------------------------

6

11 (12) (23)

= --------------

6

= 506



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