+1 vote
in General by kratos

For the following, find the least number that must be added so that the resulting number is a perfect square 511.

1 Answer

+1 vote
by kratos
 
Best answer

511
Taking square root of 511, we find that 27 has been left We see that 511 is greater than (22)2

| | 22 |
| 2 | 5 114 |
| 42 | 11184 |
| | 27 |

On adding the required number to 511, we get (23)2i.e., 529
So, the required number = 529 511 = 18

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