What could be the possible ‘one's digits of the square root of each of the following numbers? 998001

Dear Student

We know that the unit’s digit of the square of a number having digit as unit’splace 1 is 1 and also 9 is 1[92=81 whose unit place is 1].
∴ Unit’s digit of the square root of number 998001 is equal to 1 or 9.
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Thanks