Question

xiv) if a number is divisible by
both 9 & 10 then it must be
divisible by 90​

Answer 1

Answer:

yes because they are consecutive integers and if we will see factors they are satisfying

Step-by-step explanation:

hopefully it helps

Answer 2

Step-by-step explanation:

(d) If a number is divisible by 9 and 10 both, then it must be divisible by 90. True. This is because if a number is divisible by two given co-prime numbers then it is also divisible by their product. We know that 9 and 10 are co-primes and their product is equal to 90.