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Q.

Find the one's digit of the cube of 1024.

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a

2

b

8

c

6

d

4

answer is C.

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Detailed Solution

 First, consider the number 1024.
Here the last digit of 1024 is 4.
The cube of 4 is 64.
⇒43=64
Here the last digit of 43 is 4.
Hence the one’s digit of the cube of 1024 is 4.

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