You have 6 reindeer, Jebediah, Bloopin, Balthazar, Ezekiel, Prancer, and Lancer, and you want to have 4 fly your sleigh. You always have your reindeer fly in a single-file line.
How many different ways can you arrange your reindeer?

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