Question

Write (T) for true and (F) for false against the following statement:

If a number is divisible by 3 and 7, it must be divisible by 21.

Options

• True

• False

Answer 1

If a number is divisible by 3 and 7, it must be divisible by 21. True
Example: 42 is divisible by both 3 and 7. It is also divisible by 21.