A contest of 10 girls has 3 winners. In how many ways can you choose 3 winners if;
A. You select a first, second, and third place?
B. You select a group of 3 winners?
A)
First winner is selected from 10 ways.
Second winner is selected from 9 ways.
Third winner is selected from 8 ways.
Total number ways to select first second and third winner = 10 * 9 * 8 = 720
B)
Group of 3 winners can be selected from 10 students by 10C3 ways.
10C3 = 10! / [ (10 - 3)! * 3! ]
= 120
A contest of 10 girls has 3 winners. In how many ways can you choose 3...
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