True or False.
4) If a number is divisible by both 9 and 10. It must be divisible by 90.
5) A number is divisible by 18 if it is divisible by both 3 and 6.
The contrapositive of the statement “If a number is divisible by 6, then it is divisible by both 2 and 3” is:
If a number is divisible by both 2 and 3, it is also divisible by___.
Question 11
18 is divisible by both 2 and 3. It is also divisible by 2×3=6. Similarly, a number is divisible by 4 and 6. Can we say that the number must be divisible by 4×6=24? If not, give an example to justify your answer.