Question

What would be the possible ones digit of the square root of 6561 natural number?

Answer 1

Answer:

If a number has 1 or 9 in the unit's place, then its square ends in 1. This implies, The possible unit digit of the square root of a number ending in 1 is 1 or 9. The possible unit digit of the square root of the number 6561 is 1 or 9.

Step-by-step explanation:

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