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  1. Find the sum of square of first 35 natural numbers.
    1. 14910
    2. 15510
    3. 14510
    4. 16510
Correct Option: A

Sum of the square of first n natural numbers = n(n+1)(2n+1) / 6

Given n = 35
∴ Required sum = ( 35 x 36 x 71 ) / 6
= 14910


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