plz help me i don't get how to do this

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.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list