Question

There is a bag filled with 5 blue, 4 red and 3 green marbles.

A marble is taken at random from the bag, the colour is noted and then it is replaced.
Another marble is taken at random.
What is the probability of getting 2 the same colour?

Answer 1

Answer: 2/12 (1/6 simplified)

Explanation:

5+4+3=12

2 marbles of the same color

2/12

2/2=1

12/2=6