Simple Probability
Addition Rule
Compound Probability
Conditional Probability
Combinatorics
100
What is the probability of rolling a 4 on a six-sided die?
1/6
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
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?
0.60 = 60%
100
If there are 4 cone options and 6 ice cream flavors, how many ways could you make a single scoop ice cream cone?
What is 24?
200
There are 16 students in a class. 4 of them are on the soccer team. What is the probability that a randomly selected student is on the soccer team?
1/4
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 jar contains black and white marbles. Two marbles are chosen without replacement. The probability of selecting a black marble and then a white marble is 0.34, and the probability of selecting a black marble on the first draw is 0.47. What is the probability of selecting a white marble on the second draw, given that the first marble drawn was black?
What is .72 or 72%
200
What is the value of 9!
362,880
300
Which shape has a 40% chance of being selected?
The star :)
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
The probability that it is Friday and that a student is absent is 0.03. Since there are 5 school days in a week, the probability that it is Friday is 0.2. What is the probability that a student is absent given that today is Friday?
.15 or 15%
300
There are 26 paint colors sold by Lowes. You would like to pick 2 to paint your room. How many possible ways are there to do this?
26C2 = 325
400
When rolling a standard six-sided die, what is the probability of rolling NOT a 3?
5/6
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
At Kennedy Middle School, the probability that a student takes Technology and Spanish is 0.087. The probability that a student takes Technology is 0.68. What is the probability that a student takes Spanish given that the student is taking Technology?
.13 or 13%
400
A class council with 12 members would like to select president, vice president, and class secretary. How many possible ways could this be done?
12 P 3 =1320
500
If you spin the spinner what is the probability that it lands on neither black nor gray?
1/3
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
In New York State, 48% of all teenagers own a skateboard and 39% of all teenagers own a skateboard and roller blades. What is the probability that a teenager owns roller blades given that the teenager owns a skateboard?
What is .81 or 81%
500
I would like to assign seats to the 6 most annoying students in my class. They wll all sit in the front row. How many ways can I do this?
720 ways or 6 P 6