Question

A bag contains 4 white 5 orange and 3 purple marbles. If two marbles are chosen at random without replacing the first marble after it was drawn find the probability of selecting a purple on the first draw an an orange on the second draw

Answer 1

1st draw: 1/12 2nd draw: 1/11

Explanation:

During your 1st draw, there are 12 marbles so 1/12 is your answer.

During your 2nd draw, there are 11 marbles since you didn't put the purple one back. So, 1/11.