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Q.

What is the one's digit of the cube of 23?


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a

4

b

5

c

6

d

7 

answer is D.

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Detailed Solution

The given number is 23.
The number 23 has a unit digit of 3.
Cube of 3 is equal to 27.
The current digit of the cube of three is seven.
Consequently, 7 is the one’s digit of the 23.
Therefore, option 4 is correct.
 
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