SOLUTION: Jacobs & Johnson, an accounting firm, employs 15 accountants, of whom 9 are CPAs. If a delegation of 3 accountants is randomly selected from the firm to attend a conference, what i

Algebra ->  Probability-and-statistics -> SOLUTION: Jacobs & Johnson, an accounting firm, employs 15 accountants, of whom 9 are CPAs. If a delegation of 3 accountants is randomly selected from the firm to attend a conference, what i      Log On

The probability is the ratio  .


Here  is the number of combinations of n objects taken k at a time.


When solving such problems, you must know what are these numbers and how to calculate them.