the first 3digit no. divisible by 99 is 198 and the last is 990 so there are 8 terms

the first 3 digit no. divisible by 11 is 110 and the last is 990 so there are 80  terms so ans is 1/10

the second q is not clear i mean there r only 3 terms l,m,n but the wordings i am not able to understand.can u

give the 3 events