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. What will be the unit digit of the squares of the following numbers? i. 81 ii. 272 iii. 799 iv. 3853 v. 1234 vi. 26387 vii. 52698 viii. 99880 ix. 12796 x. 55555 gyklutld7tdltld

. What will be the unit digit of the squares of the following numbers? i. 81 ii. 272 iii. 799 iv. 3853 v. 1234 vi. 26387 vii. 52698 viii. 99880 ix. 12796 x. 55555 
gyklutld7tdltld

Grade:12th pass

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
2 years 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.

ii. The unit digitof the square of a number having digit 2 as unit’s place is4.∴ Unit digit of the square of number 272 is equal to 4.

iii.The unit digit of the square of a number having digit 9 as unit’s place is1.∴ Unit digit of the square of number 799 is equal to1.

iv.The unit digit of the square of a number having digit 3 as unit’s place is9.∴ Unit digit of the square of number 3853 is equal to 9.

v.The unit digit of the square of a number having digit 4 as unit’s place is6.∴ Unit digit of the square ofnumber 1234 is equal to 6.

vi.The unit digit of the square of a number having digit 7 as unit’s place is9.∴ Unit digit of the square of number 26387 is equal to 9.

vii.The unit digit of the square of a number having digit 8 as unit’s place is4.∴ Unit digit of the square of number 52698 is equal to 4.

viii.The unit digit of the square of a number having digit 0 as unit’s place is01.∴ Unit digit of the square of number 99880 is equal to 0.

ix. The unit digit of the square of a number having digit6 as unit’s place is6.∴ Unit digit of the square of number 12796 is equal to 6.

x.The unit digit of the square of a number having digit 5 as unit’s place is5.∴ Unit digit of the square of number 55555 is equal to 5

Thanks

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