Question

A bag contains 5 red marbles, 6 blue marbles and 3 green marbles. If three marbles are drawn out of the bag, what is the exact probability that all three marbles drawn will be red?

Answer 1

Explanation:

5 + 6 + 3 = 14 marbles 5 are red

1st marble red = 5 out of 14 = 5/14

now there are 13 marbles 4 are red

2nd marble red 4/13

and finally , 3rd marble red = 3/12

5/14 * 4/13 * 3/12 = 5/182 chance for three reds