Question

A bag contains 10 marbles—three red, three blue, and four green. What is the probability of pulling a red marble, not replacing it, and then pulling a blue marble?

9/100

1/10

6/19

3/5

Answer 1

B: 1/10

I did assignment and that was right.

Answer 2

`|\Omega|=10\cdot9=90\\ |A|=3\cdot3=9\\\\ P(A)=(9)/(90)=(1)/(10)`