Sam has a jar that contains 6 blue marbles and 5 violet marbles. he randomly draws one marble and then draws another marble .what is the probability of drawing two violet marbles without replacement

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220