Question

what will be the unit digit of the square of the following numbers?
1) 79

2) 681

3) 8753

4) 3214
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Answer 1

Step-by-step explanation:

i) 81

1

2

=1

So, unit digit will be 1

(ii) 272

2

2

=4

So, unit digit will be 4

(iii) 799

9

2

=81

So, unit digit will be 1

(iv) 3853

3

2

=9

So, unit digit will be 9

(v) 1234

4

2

=16

So, unit digit will be 6

(vi) 26387

7

2

=49

So, unit digit will be 9

(vii) 52698

8

2

=64

So, unit digit will be 4

(viii) 99880

0

2

=0

So, unit digit will be 0