Dependent and independent events

Question

For 11-14, in a bag of marbles, there are 12 green, 12 blue, and one red. Find the probability for each situation as a decimal rounded to the nearest hundredth.

11.What are the chances you pull the red on your first try?

12. What are the chances you pull a blue or green on your first try without replacing them, then pull the red?

13. What are the chances you pull a blue or green on your first and second try without replacing them, then pull the red?

14. What are the chances of pulling the red on either your first, second, or third try without replacing the marbles in-between?

Answer 1

The answer to the first one is 1/25.

The second one is 24/25.

Now you should try the others and ask a specific question if you get stuck!