Question

Choose the option that has common multiples of 5, 6, and 10.

• A. 20, 30
• B. 30, 45
• C. 30, 60
• D. 30, 40

Answer 1

The correct option is C 30, 60

Multiples of 5:
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ...

Multiples of 6:
6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, ...

Multiples of 10:
10, 20, 30, 40, 50, 60, 70, ...

30, 60, 90, ... are common multiples of 5, 6 and 10.