Question

There is a bag filled with 5 blue, 6 red and 2 green marbles.

A marble is taken at random from the bag, the colour is noted and then it is not replaced.
Another marble is taken at random.
What is the probability of getting 2 greens?

Answer 1

first green = 2/13

second green = 1/12
2/13 * 1/12 = 2/156 = 1/78 = 0.012820512
unlikely