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Basic Probability
Addition rules
Multiplication rules
Sample Space
Counting Rules and Probability
100
If a die is rolled one time, find the probability of getting a number greater than 4
What is 1/3 or .3333
100
If a die is rolled one time, find the probability of getting a number greater than 3 or an odd number
What is 5/6 or .8333
100
If 25% of US federal prison inmates are not US citizens, find the probability that 2 randomly selected federal prison inmates will not be US citizens
What is .063
100
How many ways can 7 different video games be arranged on a shelf?
What is 5040
100
In a company there are 7 executives: 4 women and 3 men. Three are selected at random to attend a management seminar. Find the probability that all three selected will be women
What is 4/35 or .1143
200
If one card is drawn from a deck of cards, find the probability of getting a diamond
What is 1/4 or .25
200
If one card is drawn from a deck of cards, find the probability of getting a 6 or a spade
What is 4/13 or .3077
200
The Gallup Poll reported that 52% of Americans used a seat belt the last time they got into a car. If 4 people are selected at random, find the probability that they all used their seat belt the last time they got into a car.
What is .073
200
A store manager wishes to display 8 different brand of shampoo in a row. how many ways can this be done?
What is 40320
200
In a company there are 7 executives: 4 women and 3 men. Three are selected at random to attend a management seminar. Find the probability that 2 men and 1 women will be selected.
What is 12/35 or .3429
300
If two dice are rolled one time, find the probability of getting doubles
What is 1/6 or .1667
300
A couple has three children. Find the probability that they have all girls or all boys.
What is 1/4 or .25
300
If 28% of US medical degrees are conferred to women, find the probability that 3 randomly selected medical schools graduates are men.
What is 0.373
300
How many different 4 color code stripes can be made on a sports car if each code consists or the colors green ,red, blue and white? All colors are only used once.
What is 24
300
A package contains 12 resistors, 3 or which are defective. If 4 are selected at random find the probability of getting 0 defective resistors
What is 14/55 or .2545
400
If two dice are rolled one time, find the probability of getting a sum greater than 9
What is 1/6 or .1667
400
At a convention there are 7 math teachers, 5 computer science teachers, 3 statistics teachers and 7 science teachers. If an instructor is selected at random, find the probability that a science or statistics teachers is chosen.
What is 5/11 or .4545
400
A flashlight has 6 batteries, 2 of which are defective. If 2 are chosen at random without replacement, find the probability that both are defective.
What is 1/15 or .0667
400
How many different ways can 4 tickets be selected from 50 tickets if each ticket wins a different prize?
What is 5,527,200
400
When three dice are rolled find the probability of getting triples.
What is 1/36 or .0278
500
A couple has three children. Find the probability that they have all girls.
What is 1/8 or .125
500
At a particular school with 200 male students 58 play football, 40 play basketball, and 8 play both. What is the probability that a randomly selected male student plays neither sport?
What is 0.55
500
It is reported that 72% of working women use their computers at work. Choose 5 working women at random, find the probability that at least 1 doesn't use their computer at work
What is .807
500
How many ways can an adviser choose 4 students from a class of 12 if they are all assigned the same task?
What is 495
500
Find the probability of getting dealt a full house when playing a game of poker
What is 3744/2598960 or .0014