8. A girl scout troop with 10 girl scouts and 2 leaders goes on a hike. When the path narrows, they must walk in single file with a leader at the front and a leader at the back. How many ways are there for the entire troop (including the scouts and the leaders) to line up? Solution: 9. This question refers to a standard deck of playing cards. If you are unfamiliar with playing cards, there is an explanation in "Probability of an event" section under the heading "Standard playing cards." A five-card hand is just a subset of 5 cards from a deck of 52 cards. How many different five-card hands are there from a standard deck of 52 playing cards? Solution: ns: On Accessibility: Investigate Q Search
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The troop consists of 10 girl scouts and 2 leaders, for a total of $10 + 2 = 12$ people. The constraints are: 1. They must walk in single file. 2. A leader must be at the front. 3. A leader must be at the back. Let's denote the leaders as L1 and L2, and the Show more…
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