Question

write the possible units digit of the square roots of the following numbers. which of these numbers have odd square roots?
1) 9801
the answer is( 1 or 9 , odd) but how
please answer with step by step explanation

Answer 1

The answer is 1 or 9 because when we see the 1 and 9 square there unit digit is 1. That is why the unit digit of square root of 9801 is 1 or 9 which is odd.
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