A bag has 7 balls with numbers from 4 to 10. You take out 1 ball.
What is the probability of NOT getting the ball with the number 10? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.9 | 0.1 | | red | orange | | Color |
Probability of Type
| | 0.8 | 0.2 | | wagon | sedan | | Type |
What is the probability of a car being a red wagon? | |
[2] |
A bag has 10 red balls and 3 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 30 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.2 | 0.6 | | green | purple | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it being green? | |
[1] |
There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | blue | green | pink | | Color |
How many green balls were in the bag? | |
[1] | Roll 114 6-sided dice.
How many times would you expect to get an ugly 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:
| | 0.1 | 0.05 | 0.15 | 0.1 | 0.6 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 1 and smaller than 4? | |
[1] | A bag has 4 balls with number 2 and 5 balls with a number 3. You take out 1 ball.
What is the probability of getting the ball with the number 2? | |
[1] |
A group of boys did a math test and here are their scores out of 5:
What fraction of the boys score more than 0? | |
[2] | A group of people were timed running 100m. Here are the results:
people
| | 3 | 4 | 6 | 6 | 5 | | 13 | 14 | 15 | 16 | 17 | | Time |
What is the probability of the people to run 100m in exactly 13s?
| |
[2] |
A wheel has 5 sections, each a different color.
What is the probability of getting pink? | |
[1] | There are 20 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[1] |
A group of people did a math test and here are their scores out of 5:
What fraction of the people score less than 2? | |
[2] | A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score less than 4? | |
[2] |
Flip a coin 14 times.
Each time a head comes up you win $3 and with each tail you lose $1. How much money would you expect to make altogether? | |
[1] |