February 20, 2017

Homework Help: math

Posted by bunni on Monday, June 1, 2009 at 7:49am.

1. There are 13 horses running in a race. In how many different ways can the horses place first, second, or third?
----> my answer: 1716 ways

2. There are 15 children on a basketball team. The coach needs to pick 5 children to start the game. How many different 5-person teams can be chosen?
----> my answer: 3003 ways

3. One state offers a zoo animal license plate that has 5 characters on it. The first three characters are letters and the last two are numbers. If each letter and number is used only once per plate, how many different license plates are possible? Is this a combination or permutation?
----> I coulsn't solve this one...

You randomly draw letter tiles from a bag containing the letters from the word INDEPENDENT.

1. What is the probability that a randomly chosen letter will be a D?
----> my answe: 2/11

2. What are the odds in favor of a randomly chosen letter being an E?

3. What are the odds against a randomly chosen letter being a vowel?
----> I couldn't do these [number 2+3]

I know these are lots of questions, but I really need some help. Can you please check my answers and explain the answers of those that I couldn't do? thanks a LOT!

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