pa_stats_permutations and combinations

Pre-Assessment Grade: 9-Statistics © 2006 1 -2010 tutorco.com 2 marks for each Question Permutation and Combination 1. 5 factorial can be written as : a) 5x4x3x1 b) 5x4x2x1 c) 5x4x3x2x1 d) 6x5x4x3x2x1 2. Find : 6C4 a) 10 b) 15 c) 12 d) 8 Pre-Assessment Grade: 9-Statistics © 2006 2 -2010 tutorco.com 3. How many three letters permutations can you make from the letters T, Z, and E? a) 3 b) 6 c) 9 d) 1 4. How many three person committees can be chosen from a group of nine people? a) 27 b) 80 c) 84 d) 90 Pre-Assessment Grade: 9-Statistics © 2006 3 -2010 tutorco.com 5. If there are four seats available on the bus and two people who want to sit down, how many different ways can those two people arrange themselves in the empty seats? a) 12 b) 9 c) 6 d) 8