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What will be the unit digit of the squares of the number? 81

What will be the unit digit of the squares of the  number? 
81 

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5964 Points
one year ago
Dear Student

The unit digit of square of a number having 'a' at its unit place ends with a×a.
The unit digit of the square of a number having digit 1 as unit’s place is1.
∴ Unit digit of the square of number 81 is equal to 1.

Thanks

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