or
or
LCM of 5 and 7 is 35
No. of integer between 101 and 199 devided by 35 is 3
No.of integer between 101 and 199 devided by 5 is 19
No of integer between 101 and 199 devided by 7 is 14
so, No.of integer between 101 and 199 divided by 5 or 7 are = 19 + 14 - 3 = 30
