Question

3. The ones digit of the square of a number ending with 4 is
a. 4.
b. 6.
c. 1.
d. 0.​

Answer 1

Given :  Number ending with 4

To Find : One’s digit of square of a number number

a. 4.

b. 6.

c. 1.

d. 0.​

Solution:

unit digit   unit digit of square

0                 0

1                   1

2                  4

3                  9

4                  6

5                  5

6                  6

7                  9

8                  4

9                   1

The ones digit of the square of a number ending with 4 is 6

Correct option is b) 6

 

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