A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score more than 1? | |
[2] | There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.5 | 0.2 | | blue | yellow | green | | Color |
If you choose a random ball from the bag, what is the probability of it not being blue? | |
[1] |
There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.4 | 0.3 | | yellow | purple | orange | | Color |
If you choose a random ball from the bag, what is the probability of it being purple or yellow? | |
[1] | A bag has 8 red balls, 7 blue balls and 7 yellow balls. You take out a red ball, then a red ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |
The weather forecast says that the chances of rain are 80%. The chance of remembering your umbrella is 70%. Your chance of being outside today are 90%.
What is the probability of getting wet today? | |
[1] | A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in exactly 13s?
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[2] |
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:
What is the probability of rolling a number that is bigger than 5 and smaller than 1? | |
[1] | Roll 36 6-sided dice.
How many times would you expect to get less than 2? | |
[1] |
The weather forecast says that the chances of rain are 70%. Your chance of being outside today is 60%. The chance of remembering your umbrella is 60%.
What is the probability of getting wet today? | |
[1] | A bag has 4 red balls, 8 blue balls and 4 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] |
There are 24 balls in a bag. This is is the probability distribution of their color:
How many green balls were in the bag? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.9 | 0.1 | | green | orange | | Color |
Probability of Type
| | 0.4 | 0.6 | | sedan | wagon | | Type |
What is the probability of a car being a orange sedan? | |
[2] |
A bag has 8 red balls and 4 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] | Roll 30 6-sided dice.
How many times would you expect to get more than 4? | |
[1] |
There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.3 | 0.4 | | pink | red | blue | | Color |
If you choose a random ball from the bag, what is the probability of it being red or pink? | |
[1] | There are 110 balls in a bag. This is is the probability distribution of their color:
How many green balls were in the bag? | |
[1] |
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] |