A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10 people's names into a hat. The first name d rawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and vice-chair are there?
1 answer:
Answer:
10
Step-by-step explanation:
A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10 people's names into a hat. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and vice-chair are there?
19
90
100
10! (10 factorial)
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B
Step-by-step explanation:
1. Lets focus on 55^5
55^5 = 11^5 * 5^5
2. now on 65
65 = 5 * 13
3. now on 9^15
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4. combine all three parts
11^5 * 5^5 * 5 * 13 * 3^30 = 11^5*5^6*13*3^30
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