A group of people did a math test and here are their scores out of 5:
What is the probability of the people to score less than 1? | |
[2] | Flip a coin 8 times.
Each time a head comes up you win $2 and with each tail you lose $1. How much money would you expect to make altogether? | |
[1] |
A Crazy Die has 5 sides, but each side has a different probability of being rolled. This is is the probability distribution of the sides being rolled:
| | 0.2 | | 0.15 | 0.15 | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 1? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.6 | 0.4 | | red | orange | | Color |
Probability of Type
| | 0.1 | 0.9 | | sedan | wagon | | Type |
What is the probability of a car being a red sedan? | |
[2] |
A bag has 3 balls with number 4 and 4 balls with a number 8. You take out 1 ball.
What is the probability of getting the ball with the number 8? | |
[1] | The weather forecast says that the chances of rain are 20%. The chance of remembering your umbrella is 40%. Your chance of being outside today are 40%.
What is the probability of getting wet today? | |
[1] |
A group of girls did a math test and here are their scores out of 5:
What is the probability of the girls to score less than 3? | |
[2] | Roll 48 6-sided dice.
How many times would you expect to get an even number? | |
[1] |
A Crazy Die has 5 sides, but each side has a different probability of being rolled. This is is the probability distribution of the sides being rolled:
| | 0.25 | 0.25 | 0.1 | 0.05 | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 5 and smaller than 1? | |
[1] | There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | | 0.9 | | orange | yellow | red | | Color |
How many red balls were in the bag? | |
[1] |
The chances of feeling like icecream are 80%. The chances of being near an icecream store are 80%. There is a 20% chance that you lost all your money.
What is the probability of having icecream? | |
[1] | Flip 2 coins.
What is the probability of getting 2 heads? | |
[1] |
A bag has 5 balls with numbers from 3 to 7. You take out 1 ball.
What is the probability of NOT getting the ball with the number 4? | |
[1] | A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score less than 0? | |
[2] |
A bag has 7 red balls and 8 blue balls. You take out a red ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.1 | 0.5 | | green | blue | orange | | Color |
If you choose a random ball from the bag, what is the probability of it not being green or orange? | |
[1] |
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