Tuesday

October 21, 2014

October 21, 2014

Posted by **Amy** on Thursday, December 9, 2010 at 12:31am.

- Math Finite -
**PsyDAG**, Friday, December 10, 2010 at 1:57amWhat you want in the probability of selecting 1, 2 or 3 defective pens.

P of 3 = 4/15 * 3/14 * 2/13

P of 2 = 4/15 * 3/14 * 11/13

P of 1 = 4/15 * 11/14 * 10/13

The answer is the sum of those three products.

**Answer this Question**

**Related Questions**

math - A box contains 4 red pens, 5 blue pens, and 9 green pens. Two pens are ...

finite math - a box contains 40 computer disks, 5 are defective. Three disks are...

maths - a box contains 20 fuses ,out of which ,5 are defective.if a sample of 3 ...

college - Given 24 pens, either red or blue. If 4 are blue, what is the ...

math,(fraction) - Mr Lim put some red pens and blue pens into a box.The ratio of...

math233 - a college bookstore order six boxes of red pens last week. and 70 red ...

math - A college bookstore ordered six boxes of red pens. The store sold 32 red ...

algebra - A college bookstore ordered six boxes of red pens. The store sold 37 ...

pre algebra - A college bookstore ordered 6 boxes of red pens. The store sold 32...

probabliliyiuyiuly... - ok i'd appreciate it if someone could give me the answer...