If the unit place of a number is $7$ , then find the unit digit of its cube.

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Solution

The correct option is B $3$
Given, the units digit of the number is $7$ .
We know, the cube of $7$ , i.e. $7^{3} = 343$ , whose units place is $3$ .
Therefore, the units digit of the cube is $3$ .
Hence, option $B$ is correct.

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