Question

13. Which of the following statements are true?

A. If a number is divisible by 3, it must be divisible by 9.

B. If a number is divisible by 9, it must be divisible by 3.

C. A number is divisible by 18, if it is divisible by both 3 and 6.​

Answer 1

Answer:

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Step-by-step explanation:

no

yes

yes

Answer 2

Answer:

a)

FALSE

Because there are many numbers which are divisible by 3 but not divisible by 9.

For e.g

15 is divisible by 3 but not divisible by 9.

b)

TRUE

Because if a number is divisible by any number then it is divisible by each factor of that number .

Here 3 is a factor of 9.

For e.g

27/9= 3, & 27/3= 9

c)

FALSE

For e.g

Number 30 is divisible by 3 and 6 both but not divisible by 18