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Combinations Homework

If 10 people are each asked to pick a colour from 3 possible options how many possible combinations are there
Question asked by: WOODSEY16

Asked on: 18 May 2009

There are a huge number of combinations if each person has three options and there are ten people!

The first person could pick colour one two or three, the second person could pick one two or three.

The formula we use is: n!/r!(n-r)!

So this is 10 factorial / 6(7)!

is 10 factorial / 30240 = 120 combinations

By: knowitall
Replied at: 26 May 2009
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