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Q.

What is the value of one's digit in the cube of 27 ?


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a

2

b

3

c

4

d

5 

answer is B.

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Detailed Solution

The given number is 27.
The number 27 has a unit digit of 7.
Currently, 343 is the cube of 7.
Consequently, the needed unit digit is 3.
Therefore, option 2 is correct.
 
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