Question

 If 539 is squared, then what will be at unit place? 

7

8

1

6

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Answer 1

Answer:

1

unit digit is 9 so when it is squared 81 whose unit digit is 1

Answer 2

answer is 1 as 9 is at the unit place of the number and its square is 81 which has 1 has its unit digit. Therefore, the answer is 1.