Question

Six red marbles, 4 green marbles and 2 blue marbles are placed in a jar. What is the probability of selecting a red marble and then another red marble given the first marble is not returned to the jar after it is drawn?
2/11

5/22

2/33

5/33

Answer 1

$|\Omega|=12\cdot11=132\\ |A|=6\cdot5=30\\\\ P(A)=\dfrac{30}{132}=\dfrac{5}{22}$