SSC CGL 2014 Tier 1 27 April shift 7

Question 103

The least number which must be added to 1728 to make it a perfect square is ……………..

Solution

We know that, 41 * 41 = 1681

and 42 * 42 = 1764

So, the least number to be added in 1728 to make it a perfect square = 1764-1728

= 36


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