Question

Out of 11, 101, 110, square of which number will be even​

Answer 1

May be 110 because it's unit digit is even

But 110 do not have any square root.

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Answer 2

According to squares property we know that numbers ending with even numbers are even but numbers ending with odd numbers are always odd...

so Numbers 11 and 101 gives odd squares but 110 Will give even square because it is ending with 0 which is an even number....

Hope it helps