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Question

What will be the unit digit of square of 34?


A

4

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B

5

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C

6

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D

8

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Solution

The correct option is C

6


Given number is 34.
34 has 4 in its units place.

42 = 4 x 4 = 16
Units place of 16 is 6.

Therefore, 342 will have 6 in its units place.

[Infact,
342=1156 has 6 at its units place.]


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