http://www.ck12.org Chapter 2. Conditional Probability
Therefore,
26 C 4 =^14 ,^950, which means that there are 14,950 ways that Jim can use his paid vacation days.
Example C
Kathy has 35 radishes growing in her garden, and she needs to pick 8 to put in the vegetable stew that she’s cooking.
In how many ways can Kathy pick the 8 radishes? Compute the answer using your TI calculator.
To find the answer, enter the following into your TI calculator:
3 5 MATH I I I (PRB) 3 (nCr) 8 ENTERAfter pressing
ENTER, you should see the following on your calculator’s screen:
Therefore,
35 C 8 =^23 ,^535 ,^820, which means that there are 23,535,820 ways that Kathy can pick the 8 radishes.
Guided Practice
If there are 20 rock songs and 20 rap songs to choose from, in how many different ways can you select 12 rock songs
and 7 rap songs for a mix CD?
Answer: