Wednesday

October 1, 2014

October 1, 2014

Posted by **aroah** on Tuesday, February 2, 2010 at 12:10pm.

Explain why this is just n C n1 =n C n2 when k=2.

**Answer this Question**

**Related Questions**

Probability again - A box contains 6 red balls, 4 blue balls, and 2 green balls...

math - a box filled with identically shaped balls contains 5 balls with the ...

Statistics - I have two boxes with balls; box #1 and box #2. Box #1 has 3 red ...

Math (Combinatorics) - Six boxes labeled 1,2,…,6 are arranged in a line. Seven ...

math - You have seven balls labelled 1,2,…,7 and seven unlabelled, ...

Math - A box containing 20 yellow balls, 9 red balls and 6 blue balls. If the ...

statistics - A box contains 3 white and 5 black balls. Four balls are drawn at ...

Math - Probability-- There are two boxes...the first box has 3 black balls and 1...

math - A toy baseball bat comes with 3 plastic balls in a box that is a ...

Basic Mathematics - A bag contains 2 red balls, 3 blue balls and 5 green balls. ...