If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
Assuming there is no replacement:
P(red,red) = 3/10 * 2/9 = ?
P(red,blue) = 3/10 * 4/9 = ?
Sally has a jar of 10 marbles, 3 red, 4 blue, and 3 green.
If Sally reaches into her jar and selects two marbles at random, what is the probability that the first marble is red and the second is also red? What is the probability that the first is red and the second is blue?
1 answer
2 answers