Question

True or false
1.If a number is divisible by 3. It must be divisible by 9.
2.if a number is divisible by 9.it must be divisible by 3.
3.A number is divisible by 18.if it is divisible by 3 and 6.
4.if a number is divisible by 9 and 10 both,then it must be divisible by 90.
5.if two numbers are co-primes, at least one of them must be prime.
6.All numbers which are divisible by 4 must also be divisible by 8.
7.All numbers which are divisible by 8 must also be divisible by 8.
8.If a number exactly divides two numbers separately. It must exactly divide their sum.
9.is a number exactly divides the sum of two numbers, it must exactly divide the two numbers separately. ​

Answer 1

Answer:

t, f, t, f, t, f, t, f, t

please mark me as the brainlist ans

Answer 2

Answer:

1. true

2. true

3. true

4. true

5. true

6. false

7. true

8 . true

9 . false

hope my answers are correct.