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audreycontreras23

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ive been stuck on this problem:\ can someone help me

a bag contains 4 red chips,2 blue chips and 5 green chips. A chip is randomly removed from the bag and then without replacing the first chip a second chip is removed. what is the probability that both chips from the bag were blue?
 
audreycontreras23 said:
ive been stuck on this problem:\ can someone help me

a bag contains 4 red chips,2 blue chips and 5 green chips. A chip is randomly removed from the bag and then without replacing the first chip a second chip is removed. what is the probability that both chips from the bag were blue?
Click to expand...

What is the probability that the first chip was blue?
 
Hello, audreycontreras23!

A bag contains 4 red chips,2 blue chips and 5 green chips.
A chip is randomly removed from the bag and then without replacing the first chip a second chip is removed.
What is the probability that both chips from the bag were blue?
Click to expand...

Here's one approach . . .

\(\displaystyle \text{There are: }\:_{11}C_2 \:=\:55\text{ possible outcomes.}\)

There is one in which both chips are blue.

Therefore . . .

 
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