Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.6 | 0.4 | | green | orange | | Color |
Probability of Type
| | 0.9 | 0.1 | | sedan | wagon | | Type |
What is the probability of a car being a orange sedan? | |
[2] | Roll 1 6-sided die.
What is the probability of NOT getting a 5? | |
[1] |
A group of humans did a math test and here are their scores out of 5:
What is the probability of the humans to score less than 1? | |
[2] | An obstacle course has 1 Fences and 1 Ditches. You have a 80% chance of clearing a Fence and a 80% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |
Roll 120 6-sided dice.
How many times would you expect to get an odd number? | |
[1] | There are 8 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[1] |
Roll 72 6-sided dice.
How many times would you expect to get an even number? | |
[1] | | You shoot an arrow at a target. There is a 40% chance of scoring a 10, a 40% chance of scoring a 60, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
Roll 18 6-sided dice.
How many times would you expect to get a number more than 4? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.5 | 0.5 | | green | blue | | Color |
Probability of Type
| | 0.6 | 0.4 | | wagon | sedan | | Type |
What is the probability of a car being a blue wagon? | |
[2] |
Flip a coin 4 times.
Each time a head comes up you win $4 and with each tail you lose $4. It costs $1 to play (paid once). How much money would you expect to make altogether? | |
[1] | A bag has 5 red balls, 9 green balls and 10 blue balls. You take out 1 ball.
What is the probability of getting a red ball? | |
[1] |
The weather forecast says that the chances of rain are 20%. Your chance of being outside today is 50%. The chance of remembering your umbrella is 60%.
What is the probability of getting wet today? | |
[1] | Roll 90 6-sided dice.
How many times would you expect to get anything except 3? | |
[1] |
| You shoot an arrow at a target. There is a 40% chance of scoring a 10, a 30% chance of scoring a 60, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] | A bag has 5 red balls, 2 blue balls and 5 yellow balls. You take out a yellow ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
Roll 78 6-sided dice.
How many times would you expect to get a number less than 3? | |
[1] |