Question

The unit digit of the square of 547 is 3 . ( True / False ) ​

Answer 1

false

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Answer 2

It is false that the unit digit of the square of 547 is 3

Given : The given number is 547

To find : To check that whether the unit digit of the square of the main number is 3 or not.

Solution :

We can simply solve this mathematical problem by using the following mathematical process. (our goal is to verify the required statement)

Now, to determine the unit digit of the square of 547, we just need to do the square of the unit digit of 547 itself.

So, 547 has 7 as the unit digit.

Square of the unit digit :

= (7)²

= 49

Now, the unit digit of this 7² (i.e. 9) will be the unit digit of (547)² as well.

So, the unit digit of (547)² is 9

And,

9 ≠ 3

Hence, it is false that the unit digit of the square of 547 is 3