The same astronaut visited pluto. his weight on earth was still 170 pounds, and his weight on pluto was only 10 pounds. he removed an ice core with a weight of 25 pounds on pluto. what is the weight of the ice core on earth?

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.