Delhi Police Constable Exam Model Paper 8

Question : 88 of 100

Marks: +1, -0

What smallest number should be added to 1670 to make it a perfect square?

Solution:

We know,

40^2= 1600

41^2= 1681

42^2= 1764

Hence, nearest square number is 1681
.∴ Required number = 1681 - 1670 = 11.

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