Compound Probability with Marbles

What is the probability of drawing one red marble?

P(Red)=

Mathematical Equivalence

ON

• Two Red

• Two Green

• Three Red

• Three Green

• Two Red

• Two Green

• Three Red

• Three Green

• Two Red

• Two Green

• Three Red

• Three Green

• Two Red

• Two Green

• Three Red

• Three Green

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

N(red, after)=

Mathematical Equivalence

ON

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

N(total, after)=

Mathematical Equivalence

ON

What is the probability of drawing one green marble?

P(Green)=

Mathematical Equivalence

ON

What is the probability of drawing two green marbles?

P(Green, Green)=

Mathematical Equivalence

ON

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

N(blue, after)=

Mathematical Equivalence

OFF