Question

Betsy is making a flag.She can choose three colors from red white blue yellow.How many choices does Betsy have?

Answer 1

betsy has 4 option to choose from

Answer 2

Answer:

Betsy have 4 choices.

Step-by-step explanation:

Given : Betsy is making a flag.She can choose three colors from red white blue yellow.

To Find :How many choices does Betsy have?

Solution:

Total Colors = red ,white , blue , yellow = 4

She require colors = 3

Now to find number of choices we will use combination:

$^nC_r=\frac{n!}{r!(n-r)!}$

n = 4

r = 3

$^4C_3=\frac{4!}{3!(4-3)!}$

$^4C_3=\frac{4!}{3!1!}$

$^4C_3=\frac{4 \times 3!}{3!1!}$

$^4C_3=4$

Hence Betsy have 4 choices.