Question

There is a bag filled with 4 blue, 3 red and 5 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 greens?

Answer 1

`|\Omega|=12^2=144\\|A|=5^2=25\\\\P(A)=(25)/(144)\approx17.4\%`