Which of the following is a multiple of 20?

The correct answer is: 20

To find- Multiple of 20
Solution- To find which of the given options is a multiple of 20, we need to check if we can divide the given option by 20 without getting a remainder.
a. 1
we divide 1 by 20 as-
1/20 = 0.05, which is not a whole number i.e. 1 is not divisible by 20 without a remainder
Hence, 1 is not a multiple of 20.
b. 2
we divide 2 by 20 as-
2/20 = 0.10, which is not a whole number i.e. 2 is not divisible by 20 without a remainder
Hence, 2 is not a multiple of 20.
c. 20
we divide 20 by 20 as-
20/20 = 1, which is a whole number i.e. 20 is divisible by 20 without a remainder.
Hence, 20 is a multiple of 20.
d. 11
we divide 11 by 20 as-
11/20 = 0.55, which is not a whole number i.e. 11 is not divisible by 20 without a remainder
Hence, 11 is not a multiple of 20.
Final Answer- 'Option c' i.e. 20.