Can someone help me out please?? I would really appreciate it.

Question part points submissions used suppose that 100 lottery tickets are given out in sequence to the first 100 guests to arrive at a party. of these 100 tickets, only 12 are winning tickets. the generalized pigeonhole principle guarantees that there must be a streak of at least l losing tickets in a row. find l.

This is about circle theorems. someone asap : (

Indicate the formula for the following conditions: p^c(n,r)=