Question

1. What will be the units digit of the square of the following numbers? (ii) 297 : 9 (iii) 5125 = 5 (iv) 7286 : 6 (v) 8742 = 4 (i) 39 = 1 how ?
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Answer 1

Answer:

Answer is given below

1. 297 = 9

7×7=49

So,9 is the unit place

2. 5125= 5

5×5=25

So, 5 is the unit place

3. 7286=6

6×6=36

So, 6 is the unit place

4. 8742=4

2×2=4

So, 4 is the unit place

5. 39=1

9×9=81

So, 1 is unit place

Hope it's help you