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Cube of a Number

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Question

What is the unit digit of the cube of the number whose unit digit is 7?

A

3

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B

5

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C

4

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D

2

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Solution

The correct option is A
3

The unit digit of the cube of 7 i.e.343 is 3.
Thus, the unit's digit of the cube of the number whose unit digit is 7 will be 3.

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