question_answer 1)

A number is divisible by both 5 and 12. By which other number will that number be always divisible?

Answer:

                The given number will be divisible by the product of 5 and 12. i.e., it is always divisible by \[5\times 12=60\]. Note If a number is divisible by two co-prime numbers, then it is divisible by their product also.