Complete questions 8.b., 8.c., 17, and 21 from “Check Your Understanding” on pages 525 and 526 of the textbook. Answer

Add subset to your copy of Glossary Terms.

Add the following formulas to your copy of Formula Sheet:

• permutation formula
  
  nPr where 0 ≤ r ≤ n and
• repetition formula
  
  The number of permutations of n objects when a objects are identical, b objects are identical, c objects are identical, and so on is .