Question

EXERCISE 3.5
1. 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.
(d) If a number is divisible by 9 and 10 both, then it must be divisible by 90.
(e) If two numbers are co-primes, at least one of them must be prime.
(f) All numbers which are divisible by 4 must also be divisible by 8.
​

Answer 1

Answer:

b,d,e

Step-by-step explanation:

its the answer I hope it will help you

Answer 2

Step-by-step explanation:

Hey mate here'a your answer:

(a)False

(b)True

(c)False

(d)True

(e)False

(f)False

Hope it helps!!!

And if it does please mark me as brainliest !!