Conditional Probability
Kayla has a bowl of beads that contains 42 yellow beads, 28 green beads, 12 white beads, and 18 red beads. She randomly draws a bead from the bowl. The probability of Kayla drawing a red or a green bead is.
What is 23/50?
Andrew has a box which contains 4 pink blocks, 5 yellow blocks and 6 green blocks. He picks one block, records its color and puts it back in the box. He then draws another block. What is the probability of taking out a yellow block followed by the pink block?
What is 4/45?
A day of the week is chosen at random. What is the probability of choosing a Monday or a Tuesday?
What is 2/7?
Is 7/9 = 35/45?
What is yes?
A travel agent plans trips from Chicago to Miami. There are three ways to get from town to town: airplane, bus, and train. Once the tourists arrive, there are two ways to get to the hotel: hotel van or taxi. The sample size is:
What is 6?
Amy has a box containing 6 white, 4 red, and 8 black marbles. She picks a marble randomly. It is red. The second time, she picks a white marble. In the third attempt, Amy picks a white marble again. Amy has not replaced the marbles she picked.
What is 8/15?
Finn has 4 pairs of black shoes and 4 pairs of brown shoes on his shoe rack. He picks one pair of shoes, record its color, puts it back on the rack. He then draws another shoe. What is the probability of taking out a black shoe followed by the brown shoe?
What is 1/4?
Calculate the probability of getting a 2 or 5 when rolling a die.
What is 1/3?
12/17 x 9/11 =
Sally is going out to eat for her birthday and then participating in an activity. The local restaurants are Mexican, Chinese, and Seafood. The activities she can choose from are Putt-Putt, bowling, and movies. How many options does Sally have?
What is 9?
Malik randomly picked two different numbers from 1 to 9 (including 1 and 9). The first of the two numbers he picks is odd.
What is the probability that Malik picked a second odd number, given that the first number was odd?
What is 1/2?
Jordan has 9 blue balls, 6 red balls and 5 brown balls in a box. Two balls are drawn without replacement from the box. What is the probability that both of the balls are brown?
What is 1/19?
A spinner has 4 equal sectors colored yellow, blue, green and red. What is the probability of landing on red or blue after spinning this spinner?
What is 1/2?
3/5 divide 4/7
What is 21/20?
You are picking out your outfit for the day. You have a green, blue, and red shirt; blue, black, and khaki pants; and brown or black shoes. How many possible outfit combinations do you have?
What is 18?
Amy has a box containing 6 white, 4 red, and 8 black marbles. She picks a marble randomly. It is red. The second time, she picks a white marble. In the third attempt, Amy picks a white marble again. Amy has not replaced the marbles she picked.
What is 5/7?
Bella has 7 green beads, 10 yellow beads and 3 white beads in a pouch. Two beads are drawn without replacement from the pouch. What is the probability that both of the beads are yellow?
What is 9/38?
A single card is chosen at random from a standard deck of 52 playing cards. What is the probability of choosing a king or a club?
3/10 - 3/15
What is 1/10?
The school is choosing a new mascot and new school colors. The choices for mascot are a lion, a bear, and a porpoise, and the choices for colors are blue, black, brown, and grey. How many possible mascot and color combinations are there?
What is 12?
Tyler packed 8 shirts for a trip. Six of the shirts are short-sleeved. He randomly selects a shirt from his suitcase, replaces the shirt, and then selects another. The probability that he selects a short-sleeved shirt both times is.
What is 9/16?
Caleb has 6 black caps, 4 yellow caps, and 9 blue caps in his wardrobe. Two caps are drawn without replacement from the wardrobe. What is the probability that one of the caps is blue and the 2nd one is black?
What is 3/19?
In a math class of 30 students, 17 are boys and 13 are girls. On a unit test, 4 boys and 5 girls made an A grade. If a student is chosen at random from the class, what is the probability of choosing a girl or an A student?
What is 7/10?
5/29 + 7/35 =
What is 54/145?
A store specializes in selling shirts. There are three sizes: small, medium, and large. The shirts either have buttons or snaps. The colors of the shirts are pink, purple, yellow, and orange. How many possible shirts are there?
What is 24?