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. What will be the unit digit of the squares of the following numbers? i. 81

. What will be the unit digit of the squares of the following numbers? i. 81  

Grade:12th pass

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
one year ago
Dear Student

The unit digit of square of a number having 'a' at its unit place ends with a×a.

i.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.


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