What could be the possible ‘one’s’ digit of the square root of 657666025?

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1, 5

5, 10

answer is B.

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Detailed Solution

Given integer is 657666025.
We know that if the number ends with 5, then the one’s digit of the square root of that number will be 5.
Here the given number 657666025 has 5 in its unit’s place.
Thus, the possible one’s digit of square root of 657666025 is 5.
Therefore, option 2 is correct.

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