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

297

Given a number 297 and need to find out the unit digit of the square of number.

Now, the square of number, n = n²

Since, we have “7” in the units place in the given number “297” we have to square the number 7

⇒ 7² = 49 and 9 will be the units’ digit.

Hence, the units digit of the square of 297 is 9.