Homework Help: Math

Posted by Allison on Sunday, May 6, 2007 at 2:18pm.

Keiko has 7 colors of lanyard. She uses 3 different colors to make a keychain. How many different combinations can she choose?

7 for the first, 6 for the second and 5 for the third. The answer is the product of those numbers, no matter what order the three colors are picked. The number of possibilities in "combination" problemsa like this can written in the form
7!/(7-3)! = 7!/4! = 7x6x5

Write out the possibilities.
All of them.
Then count them.
Tada! Ur answer will appear.
:D

No one has answered this question yet.

Answer this Question

Related Questions

math, bobpursly - I dont know what the -4)colors means. Models*exterior colors*...
math - we decided on a new logo for our brand of t-shirts.It was to be 3 stripes...
math - a man buying a new car can choose among 6 different colors, 3 different ...
art-colors - what are all the different colors that mix to make other colors? ...
math - a clothing store sells 12 different colors of a shirt and 5 different ...
math - Mrs. Nelson uses four different colors to make a scarf. She uses 5/8 of a...
Science - What causes the different colors of visible light? My answer---- ...
math - A new car comes in 5 exterior colors and 3 interior colors. How many ...
Math 8 - Isabelle has a choice of 3 colors of pants, 5 colors of shirts, and 3 ...
Math 8 - Isabelle has a choice of 3 colors of pants, 5 colors of shirts, and 3 ...

For Further Reading

First Name:
School Subject:
Answer: