Provide an appropriate response.
-If a number is divisible by 7 and 3, then the number is divisible by 21.

Question

Quizplus · Accepted Answer

A number divisible by both 7 and 3 is also divisible by their product, 21, due to the fundamental theorem of arithmetic which states that any integer greater than 1 is either a prime number or can be uniquely factored into prime numbers. Since 7 and 3 are prime and their product is 21, divisibility by both implies divisibility by 21.

Provide an Appropriate Response