total no between 100 and 200 which are divisible by both 9 and 6.
A number is divisible by 9 and 6 both, if it is divisible by LCM of 9 and 6 i.e., 18. Hence, the numbers are 108, 126, 144, 162, 180, 198. Thus , the total number of integers between 100 and 200 are 6.
