What will be the units digit of the square of the following numbers?

8742

Given a number 8742 and need to find out the unit digit of the square of number.

Now, the square of number, n = n²

Since, we have “2” in the units place in the given number “8742” we have to square the number 2

⇒ 2² = 4

⇒ 4will be the units’ digit.

Hence, the units digit of the square of 8742 is 4.