Q.6. A number is divisible by both 5 and 12. By which other number will that number be always divisible?

Multiples of 5 = 5 , 10, 15, 20,............60, 65,.........
Multiple of 12 = 12, 24, 36, 48, 60,..............
Common multiples of 5 and 12 = 60, 120,......
If the number is divisible by both 5 and 12 this the number will also be divisible by common multiple of 5 and 12 which is 60, 120 , 180,........