Question

write down the unit's place digit of 81²
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Answer 1

Answer:

1

Step-by-step explanation:

because the square of 1 is 1 and its unit digit is also 1.Ok

Answer 2

Answer:

We should see the unit's digit of the given number. For 81, it's 1.

Now, unit's digit of (81)² is same as the unit digit of 1² i.e 1.

Therefore, the unit's digit of 81² is also 1.