Question

A bag contains 10 blue, 6 green, and 4 red marbles. You choose one marble. Without putting it back, you choose a second marble. What is the probability that you first choose a green marble and then a blue marble?

Answer 1

P(green then blue) = 3/19

Explanation:

Answer 2

first:
red p:
4/20 cross multiply by x/100 that means:
20x= 400
x=20 thats the probability for red. fo the same thing for the rest. just do :
numberofcolor/totalmarblescross multiplied by x/ 100
any questions? just ask me.