Basic Probability
Addition rules
Multiplication rules
Miscellaneous
Miscellaneous 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

Who is first alphabetically on our roster?

Who is Coby Anderson?

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

How many pets does Mr. Cormier have?

What is 1.

200

Find the probability of rolling a die and getting less than a 5 or an even number.

What is .833

300

If two dice are rolled one time, find the probability of getting doubles

What is 1/6 or .1667

300

A couple has two children. Find the probability that they have 2 boys.

.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

What day of the week is Christmas on this year?

What is Wednesday.

300

True or False:  If 2 events are independent, then they are also mutually exclusive.

What is False

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

Name all 8 original reindeer

What is Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donner and Blitzen

400

When everyone is present what is the probability of the phone ringing and it being for Bonazzoli?

What is 1/19?
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

What is probability of picking an ace from a deck of cards, then picking a spade and then picking another ace. WITHOUT REPLACEMENT

What is .719

500

How old is Mr. Cormier?

What is 29?

500

Find the probability in our class of someone being a female or having blonde hair.

What is ________________?