(1 point) you have 3 pairs of pants or skirts, 4 shirts or blouses, and 5 pairs of shoes. you can use them to wear 60 different outfits. you are a participant in a peace conference with 10 participants. everybody shakes everybody else's hand. there are 45 handshakes altogether. a family of five is taking an extended vacation. every day at lunch they stand in line at a cafeteria in a different order than ever before. on the last day, however, they can't help repeating a previous order. their vacation lasted 120 days.