You have four $1 bills, two $5 bills, five $10 bills, and five $20 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. Find P ($1, then $10).

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Mathematics

Tyree Burch

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You have four $1 bills, two $5 bills, five $10 bills, and five $20 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. Find P ($1, then $10).

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Kelvin Ray · Answer 1

There is 16 bills in total. The probability that you select a 1 dollar bill is 4/16. The probability that you select a 10 dollar boll is 5/16-1. Multiply 4/16 by 5/15 to find the answer. The answer is 1/12. This is the method for geometric probabilities.