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Mathematics, 07.04.2020 19:58 pinnij20
1. State if each scenario involves a permutation or a combination. Then find the number of possibilities:(a) Castel and Joe are planning trips to three countries this year. There are 7 countries they would like to visit. One trip will be one week long, another two days, and the other two weeks.(b) You are setting the combination on a three-digit lock. You want to use the numbers 123 but don't care what order they are in.(c) A group of 25 people are going to run a race. The top 8 finishers advance to the finals.
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