Compound Probability with Marbles

What is the probability of drawing one red marble?

P(Red)=

Which situation has this probability?

$$P=\frac{3}{12}\times\frac{2}{11}$$

Which situation has this probability?

$$P=\frac{3}{12}\times\frac{2}{11}\times\frac{1}{10}$$

Which situation has this probability?

$$P=\frac{4}{12}\times\frac{3}{11}$$

Which situation has this probability?

$$P=\frac{4}{12}\times\frac{3}{11}\times\frac{2}{10}$$

If we remove 1 red marble, how many red's are left?

N(red, after)=

If we remove 1 red marble, how many total marbles are left?

N(total, after)=

What is the probability of drawing one green marble?

P(Green)=

What is the probability of drawing two green marbles?

P(Green, Green)=

If we remove 1 blue marble, how many blue's are left?

N(blue, after)=