Question

If the unit place digit of a perfect square is 4 then the unit place digit of its square root is
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Answer 1

Answer:

If unit digit of a perfect square is 4 then ten's digit has to be Even. E.g. 64, 144, 484 all are Perfect Square having unit digit 4 and tens digit is even. E.g. 25, 225, 625,1225 all are Perfect Square having unit digit 5 and tens digit is 2.

I hope it helps you

Answer 2

2 is your answer my friend.