Simple Random Probability

A jar contains 2 green marbles, 4 blue marbles, 3 yellow marbles, and 2 black marbles. A marble is chosen at random from the jar and replaced. Then a second marble is chosen at random. Find the probability of the first marble being green and the second marble being yellow.

• 4/121

• 8/121

• 3/121

• 6/121

A coin and a number cube with the numbers 1 through 6 are tossed. What is the probability of the coin showing tails and the number cube showing the number 3? 

• 1/12

• 1/4

• 1/8

• 1/2

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

• 1/2

• 1/3

• 1/4

• Never, Tails never fails.

What is the probability of spinning a prime number? 

• 1/2

• 2/3

• 1/6

• 0

Two marbles are randomly drawn from a bag containing 3 purple, 1 blue, and 1 yellow marble. The first marble is blue and is not replaced. Find the probability of drawing a second marble that is purple.

• 3/5

• 3/4

• 3/20

• 2/5

A fruit basket contains 9 apples, 3 bananas, 7 oranges, 5 pears, and 1 grapefruit. Kyle randomly chooses a fruit, does not replace it, then chooses another. What is the probably that he chose two pears?

• 9/49

• 4/125

• 1/10

• 1/30

A chorus has 50 girls and 35 boys. If two are chosen at random to sing a duet, what is the probability that both will be boys? 

• 1/6

• 7/17

• 3/8

• 13/25

P(not A) = 
*Remember to simplify.*

• 6/8

• 3/4

• 2/8

• 1/4

A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?

• 1/3

• 30%

• 3

• 1/10

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter that is not “A”?

• 2/7

• 5/7

• 5/49

• 10/49