Posted by **Jonathon** on Wednesday, February 13, 2013 at 4:08pm.

There are 4 chocolate chip cookies and 12 oatmeal cookies in a jar. If you reach in an randomly choose 2 cookies without replacing the first, what is the probability that both will be chocolate chip?

Thanks!

- Math -
**JJ**, Wednesday, February 13, 2013 at 4:11pm
There are 16 cookies in the jar,

Since there are 4 choc chips you have 4/16 or 1/4 to get a choc chip

You have to multiply 1/4 times the chance of getting a second choc. chip.

Since you aren't replacing, you now have 3/15 chances since you have to assume you got the choc. chip the first time and there were only 15 cookies left.

Multiply 1/4 times 1/5.

- Math -
**Jonathon**, Wednesday, February 13, 2013 at 4:15pm
Thank you so much JJ! I am home schooled and I have been struggling with these probability questions! You explained it and it made sense! Thanks!

- Math -
**dn**, Monday, September 21, 2015 at 8:36am
16

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