Question

Dalia has a jar with 6 red pencils and 4 green pencils. She will randomly pick two pencils without replacement. What is the probability that Dalia will pick two red pencils?

6/25
1/3
9/25
2/5

Im a bit confused on this type of probability so I would love an explanation so I can figure out the answer for myself

Answer 1

1/3

Explanation:

i have attached a tree diagram to help with your understanding, first branches show probability of picking either green or red the first time she picks one. The next set of branches show the updated probabilities after one pencil has been taken out.