Question

Amber has a bag of 24 marbles.7 are red, 5 are blue, and the rest are green.James takes two marbles out without replacing them. What is the probability that they are both blue?

Answer 1

Answer: $\frac{5}{138}$

Step-by-step explanation:

Given

Amber has 24 marbles

7 are red, 5 are blue,

$\Rightarrow$24-12=12 is green

$\text{Probability}=\text{chosing a blue marble out of 24 }\times \text{Chosing another blue out of 23}\\P=\frac{5}{24}\times \frac{4}{23}=\frac{5}{138}$