 
			 
			MCQOPTIONS
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				| 1. | The sum of square of the first n natural numbers is given by _________ | 
| A. | n(n+1)(2n+1)/6 | 
| B. | n(n-1)/2(2n+1) | 
| C. | n<sup>2</sup>(n+1)(2n+1)/6 | 
| D. | None of the mentioned | 
| Answer» B. n(n-1)/2(2n+1) | |