| You shoot an arrow at a target. There is a 60% chance of scoring a 30, 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 2 red balls and 7 blue balls. You take out a red ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
The weather forecast says that the chances of rain are 80%. Your chance of being outside today is 80%. The chance of remembering your umbrella is 70%.
What is the probability of getting wet today? | |
[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:
| | 0.65 | | 0.2 | 0.05 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 3 and smaller than 4? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[1] | There are 20 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
| | 1 | | | blue | purple | | Color |
Probability of Type
| | 0.5 | 0.5 | | sedan | wagon | | Type |
What is the probability of a car being a purple sedan? | |
[2] | There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.5 | 0.4 | | pink | yellow | blue | | Color |
If you choose a random ball from the bag, what is the probability of it being yellow or pink? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.3 | 0.5 | | pink | green | purple | | Color |
If you choose a random ball from the bag, what is the probability of it not being green? | |
[1] | Roll 30 6-sided dice.
How many times would you expect to get less than 4? | |
[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:
| | 0.65 | 0.2 | 0.05 | | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 3 or 4? | |
[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:
| | 0.6 | | 0.1 | 0.15 | 0.15 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 2? | |
[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 | 0.2 | | 0.45 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2? | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 16s?
| |
[2] |
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 exactly 5? | |
[2] | | You shoot an arrow at a target. There is a 60% chance of scoring a 20, 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, 7 blue balls and 9 yellow balls. You take out a red ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |