You are here:

- Home
- Science
- Math for Kids
- Word Problems
- probability

Advertisement

How would i find the probability that two quarters and a nickel are chosen without replacement from a bag of 8 quarters and 12 nickles??

would the probability formula be necessary??

The function is C(a,b) where a is the number of items and b is the number chosen.

Normally, this is written as a parenthesis on two lines with the numbers over each other.

C(a,b) = a!/[(b!(a-b)!].

The formula would be C(8,2) * C(12,1). That is, (8!/[2!6!])(12!/[1!11!]).

That reduces to (8*7/2)12 = 28*12 = 336.

- Add to this Answer
- Ask a Question

Rating(1-10) | Knowledgeability = 10 | Clarity of Response = 10 | Politeness = 10 |

Comment | Thankyou!!! |

Word Problems

Answers by Expert:

I have answered every question that was a story problems that had any relation to math for which an answer existed. I have ever answered some questions which had a vague relation to math, but still related.

My experience is from when I started doing story problems in grade school.
I have been assisting, helping, and bringing smiles to many others ever since.
Are you the next one?
**Publications**

In over 850 questions answered to other users. Maybe you're the next one ...**Education/Credentials**

I received a BA in Mathematical Sciences from OSU and a MS in Mathematics from OSU as well.
**Awards and Honors**

I earned Both my BS degree and MS degree with honors for having such a high grade point average.
**Past/Present Clients**

I have answered hundreds and hundreds of students at OSU in the 80's and over 8,500 questions right here,
but only a little over 850 of them have been word problems.