Betsy is making a flag, she can choose three colors from red, white, blue, and yellow. how many choices does Betsey have?

I think she would have 12 choices because:

She has four colors: 4

She can choose three: 3

4 * 3 = 12

To find out how many choices Betsy has, we need to calculate the number of possible combinations of three colors from the given options.

To do this, we can use the concept of combinations. The formula for calculating combinations is given by:

C(n, k) = n! / (k! * (n - k)!)

Where n represents the total number of options and k represents the number of choices we want to make.

In this case, we want to choose three colors from four options. So, we can calculate it as follows:

C(4, 3) = 4! / (3! * (4 - 3)!)
= 4! / (3! * 1!)
= (4 * 3!) / (3! * 1)
= (4 * 3) / 1
= 12 / 1
= 12

Therefore, Betsy has 12 different choices when selecting three colors from red, white, blue, and yellow.