Answer :
the smallest 3 digit number which is exactly divisible by 6,8,12......is 120..becausethe LCM of 6,8 and 12 is 24
100/24=4 and change
the next larger multiple is 5
then,,5*24=120
100/24=4 and change
the next larger multiple is 5
then,,5*24=120
120 is the smallest 3 digit number which is exactly divisible by 6,8 &12