Question

A bag contains 12 red checkers and 6 black checkers. You will randomly select two checkers, one at a time, without replacement.

Fill in the probabilities on each branch of the tree diagram below. Write the probabilities as fractions in simplified form.

Answer 1

b) you could choose :

red, black

black, red

red, red

c) p(black, red) = (6/18)(12/17) = 72/306 = 4/17