Question

8. (6pts).You have an urn that contains 12 balls, 5 yellow, 4 red, and 3 green. You randomly select two
balls.
a) What is the probability that you select two balls of the same color?

Answer 1

compute for each, then add

Answer 2

for example two yellow is \[\frac{5\times 4}{12\times 11}\]

Answer 3

you go the rest?

Answer 4

Are you sure you can add the probabilities of dependent events?

Answer 5

i am not sure what you mean by "dependent"
you can add them because they are "disjoint"
two yellow or two red or two green

Answer 6

oh I understand. Thank you