Probability Brain Dump

Bag A contains 9 red marbles and 3 green marbles. Bag B contains 9 black marbles and 6 orange marbles. Find the probability of selecting one green marble from bag A and one black marble from bag B.

• 3/20
• 1/4
• 3/31
• 2/27

A basket contains four apples and six peaches. You randomly select one piece of fruit and eat it. Then you randomly select another piece of fruit. What is the probability that both pieces of fruit are apples.

• 2/15
• 3/17
• 1/19
• 6/21

A farm has 5 brown cows and 10 white cows. A fence is open and two cows escape. What is the probability that it will be a brown cow, then a white cow?

• 1/9
• 2/9
• 5/21
• 10/21

What is the probability of flipping a coin and getting heads?

• 1/2
• 1/3
• 1/4
• Never, Tails never fails.

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)

• 2/9
• 1/3
• 1/2
• 1/4

What is the probability of drawing a 3 from a deck of cards?

• 2/13

• 1/13

• 3/52

• 5/52

What is the probability of picking a vowel (a,e,i,o,u) and rolling a 3 or less on a die?

• 5/26

• 1/2

• 6/32

• 6/52

There are 10 women and 40 men at a political rally. 25 of the people are Democrats, 20 are Republicans, and 5 are Independent. What is the probability of choosing a person at random and picking a female who is a Democrat? (HINT: It’s AND)

• 1/10

• 7/10

• 1/2

• 3/4

Hank wants to create a 4-letter password using the letters from the word “FRIDAY”. If he cannot repeat the letters in each password, how many possible passwords can he make?

HINT: Multiply

• 6

• 360

• 36

• 100

Jessica has a drawer full of socks. She has 4 blue ones, 5 white ones, 3 pink ones. What is the probability of drawing either a white or pink sock?

• 5/48

• 1/3

• 2/3

• 1/3