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**finitehelp****Member**- Registered: 2009-06-21
- Posts: 80

1.A bag contains 7 apples and 5 oranges. If you select 6 pieces of fruit without looking, how many ways can you get 6 apples?

2.How many different three-digit numbers can be written using digits from the set {5, 6, 7, 8, 9} without any repeating digits?

3.A child rolls a 6-sided die 6 times. What is the probability of the child rolling exactly two fours?

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 103,726

Hi finitehelp;

2)

3) If you mean exactly 2 fours and four others you have a simple binomial with 2 successes

*Last edited by bobbym (2009-07-27 17:42:33)*

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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**soroban****Member**- Registered: 2007-03-09
- Posts: 452

1. A bag contains 7 apples and 5 oranges.

If you select 6 pieces of fruit without looking, how many ways can you get 6 apples?

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**finitehelp****Member**- Registered: 2009-06-21
- Posts: 80

thanks guys!

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