Can someone me with these problems

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 race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.