Question

if a number is divisible by 5 and 12 then by which number will it bedivisible​​

Answer 1

By which other number will that number be always divisible? 5 and 12 are co-primes and we know that if a number is divisble by two co-primes, then it is a known fact that it is also divisible by their product. The product of 5 and 12 is 60. Hence, the number is always divisible by 60.