Probability section final review

Sabrina spins a spinner with eight wedges numbered one through eight. What is the probability the spinner lands on an even number?

• 4/8 or 1/2

• 2/8 or 1/4

• 6/8 or 3/4

• 1/8

A bag contains three red marbles, two blue marbles and one green marble. Dorian reaches into the bag without looking and takes out one marble. Find the probability that Dorian picked a blue marble.

• 2/6 or 1/3

• 1/6

• 3/6 or 1/2

• 4/6 or 2/3

The letters of the word “P Y T H A G O R A S” on written on small tiles and placed in a hat. Aimee reaches into the hat without looking and pulls out a tile. What is the probability that she got a vowel?

• 3/9 or 1/3

• 4/10 or 2/5

• 2/9

• 5/10 or 1/2

Sonarri has five pairs of pants, seven shirts, and two pairs of shoes. How many outfits can Sonarri make?

• 70

• 35

• 14

• 49

A certain deli has six kinds of meat, three kinds of cheeses, and four kinds of bread. If a sandwich is made from one type of bread, one type of meat, and one type of cheese, how many different sandwiches can be made?

• 72

• 36

• 48

• 64

Ricardo has a bag with five red marbles and three blue marbles. He reaches into the bag, pulls out a marble and writes down what color it was. He then replaces it the bag, shakes it up, and reaches in again and pulls out another marble. What is the probability that Ricardo pulled out a red marble first and a blue marble second?

• 5/24

• 15/64

• 15/56

• 8/16

Benalis has a bag filled with marbles.  There are 7 blue marbles and 1 green   marble.  She reaches into the bag and pulls out a marble.  She keeps this        marble out of the bag.  Then she reaches in again and pulls out another marble.        What is the probability that she selected a blue marble first and a blue marble second?

• 1/4

• 1/6

• 1/9

• 1/12

Andrea has a bag of marbles.  There are three blue marbles each having the       numbers 1, 2, or 3 printed on them.  There is one red marble with the number 4       printed on it.  She reaches into the bag and pulls out one marble.  Find the    probability that she pulled out a blue marble or a marble with an even number           on it.

• 1/2

• 2/3

• 3/4

• 1/4

A math teacher gave her class two tests. 25% of the class passed both tests and 42% of the class passed the first test. What percent of those who passed the first test also passed the second test?

• 25%

• 50%

• 75%

• 100%