An online survey asked a sample of high school students their favorite type of music, and the results were tabulated above. Find the probability that a person chosen at random did not choose pop music, given that the student is a sophomore or a junior. A. 8/103
B. 47/206
C. 16/63
D. 87/103​

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.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Can someone show me step by step how to do this?