I whisper room as a room the last two people stand on opposite sides of an elliptical shaved room in here till there's whispers. The equation I would say I can hear one another are the fuzzy of the lives. If the room has a major excess of 122 feet in a minor access to 22 feet, how far apart, and for you, are the two people??

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?