Question

Mario has a very disorganized sock drawer. Inside, there are 12 black socks and 16 white socks. Without looking, Mario takes one sock out of the drawer and then takes out another without replacing the first sock. Which expression shows one way to find the probability that he will take out two white socks?

Answer 1

Given

12 black socks

16 white socks

Without looking, Mario takes one sock out of the drawer and then takes out another without replacing the first sock

Which expression shows one way to find the probability that he will take out two white socks?

Procedure

for the first white socks

$\frac{16}{16+12}=\frac{16}{28}=\frac{4}{7}=0.5714$

for the second white socks

$\frac{15}{15+12}=\frac{15}{27}=\frac{5}{9}=0.555$