Question

EXERCISE 6.1 hat will be the unit digit of the squares oft 81 (1) 272 1234 (vi) 26387 x Xx) 55555 e following numbers are obviously no . 12796​

Answer 1

Answer:

Unit digit of the square of number 81 is equal to 1. ii. The unit digit of the square of a number having digit 2 as unit's place is 4. ∴ Unit digit of the square of number 272 is equal to 4.

Step-by-step explanation:

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Answer 2

Given :

81

272

1234

26387

55555

12796

To Find : unit digit of the squares

Solution:

1² = 1

2² = 4

3² = 9

4² = 16

5² = 25

6² = 36

7² = 49

8² = 64

9² = 81

10² = 100

Hence  unit digits of squares of below will be

81                1

272             4

1234            6

26387           9

55555         5  

12796          6

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