1.

Least number that must be added to 64500 to make the result a perfect square,is1). 162). 243). 124). 27

Answer»

The option c and d are eliminated SINCE if 12 and 27 are ADDED to 64500, the last digit becomes 2 and 7 respectively. And a perfect never ends in 2, 3, 7, 8.

64500 + 16 = 64516 = (254)2


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