40 people are in a classroom. Everyone is sitting in either pairs of desks (2 desks together) or in a group of 4 (4 desks together). All 40 people are sitting in their own desk. There are 2 more pairs of desks than groups of desks. How many of each seating arrangement is there?

Which statement best explains why ben uses the width hi to create the arc at j from point k

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.

How to simply and write the answer n a whole number