1) A businessman has 10 suits. He needs to pack 3 of them to go on a trip. How many can he do this?
2) A multiple choice test has 8 questions, each with 3 possible answers. how many can the test be filled?
3) I order a dozen bagels. there are poppy seed, onion and sesame bagels available today. in how many different ways can I fill my order?
4) A bag contains 26 scrabble tiles, each with a different letter on it. i draw 3 tiles and arrange them on the tray in front of me. How many "words" can I form this way?
1) 10 choose 3
2) 8 choose 3
Is my thinking correct?