Question

If a number is divisible by 90 then :

• A. It is divisible by both 2 and 45
• B. It is divisible by both 5 and 18
• C. It is divisible by both 9 and 10
• D. It is divisible by both 5 and 20

Answer 1

Answer: (A), (B), (C)

The correct options are
A

It is divisible by both 2 and 45

B

It is divisible by both 5 and 18

C

It is divisible by both 9 and 10

The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90.

Hence, it is divisible by 2, 45, 5, 18, 9 and 10 as these numbers are factors of 90.