Question

Which of the following numbers are divisible by both 5 and 10?

• A. 3 and 4
• B. 2 and 4
• C. 2, 3 and 4
• D. All of these

Answer 1

Answer: (B), (D)

The correct options are
B

2 and 4

D

All of these

For a number to be divisible by 5, it should end with 0 or 5. For a number to be divisible by 10 it should end with 0.
Every number that is divisible by 10, hence must be divisible by 5.
The numbers 567860 and 55650 have zeroes at the end. Hence, they are divisible by 10. As every number that is divisible by 10 is divisible by 5, so, the numbers 567860 and 55650 are divisible by both 5 and 10.

The number 68945 has a unit's digit of 5, hence it is divisible by 5 and not by 10.

The number 56789 has neither a unit's digit of 5 not a unit's digit of 10. Hence, it is neither divisible by 5 or 10.