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What will be the unit digit of the cube of a number ending with 2 ?
- a)8
- b)4
- c)2
- d)6
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
What will be the unit digit of the cube of a number ending with 2 ?a)8...
Solution:
We know that the unit digit of the cube of any number depends only on the unit digit of that number. So, we only need to focus on the unit digit of the given number.
Let's consider the numbers ending with 2 and their cubes:
- 2^3 = 8
- 12^3 = 1728
- 22^3 = 10648
- 32^3 = 32768
- 42^3 = 74088
We can observe that the unit digit of the cubes of these numbers is always 8. Therefore, the unit digit of the cube of any number ending with 2 is 8.
Hence, the correct option is (a) 8.
We know that the unit digit of the cube of any number depends only on the unit digit of that number. So, we only need to focus on the unit digit of the given number.
Let's consider the numbers ending with 2 and their cubes:
- 2^3 = 8
- 12^3 = 1728
- 22^3 = 10648
- 32^3 = 32768
- 42^3 = 74088
We can observe that the unit digit of the cubes of these numbers is always 8. Therefore, the unit digit of the cube of any number ending with 2 is 8.
Hence, the correct option is (a) 8.
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What will be the unit digit of the cube of a number ending with 2 ?a)8...
Cube of 2 is 8, therefore unit digit or the ending digit is 8
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