# Probability Test Review Question Preview (ID: 41275)

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Review Topics For The Probability Test (Q3 Test 3).

**If you want to find the probability of choosing 5 objects from a group of 50 and the order does not matter, what would you use?**

a) Permutation

b) Counting Principle

c) Combination

d) Probability of Grouping

**How many possible sandwiches of one meat, one cheese, and one condiment can be made from wheat, white, rye breads, turkey, ham, and bacon, and Swiss, American, and Provolone cheeses?**

a) 9

b) 18

c) 3

d) 27

**What is the maximum number of different 5-digit passwords that can be created from the numbers 0-9 without repetition?**

a) 30,240

b) 3125

c) 100,000

d) 50

**What is the formula for the number of combinations?**

a) C=n!/(n-r)!r!

b) C=n!/r!

c) C=r!/(n-r)!

d) C=n!/(n-r)!

**What is the probability a particular student is chosen president and another particular student is chosen vice president from a group of 5 nominees?**

a) 2/5

b) 1/5

c) 1/10

d) 1/20

**What is the formula for the number of permutations?**

a) P=n!/(n-r)!r!

b) P=n!/r!

c) P=r!/(n-r)!

d) P=n!/(n-r)!

**How many different pairs of books (groups of 2) can be chosen from a list of seven books to be read for book reports?**

a) 10

b) 21

c) 42

d) 5040

**A box contains 7 blue marbles, 6 red marbles, 2 white marbles, and 3 black marbles. What is the probability one marble selected at random will be red?**

a) 0.25

b) 0.2

c) 0.33

d) 0.42

**When two dice are rolled, what is the probability that a selected die is a 4, given that the sum of the die is 9?**

a) 1/6

b) 1/4

c) 1/3

d) 1/2

**What is the probability of drawing a Jack OR a six from a standard deck of cards without jokers?**

a) 2/52

b) 1/26

c) 2/13

d) 1/2704

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