Roll 1 6-sided die.
What is the probability of getting a number smaller than or equal to 1? | |
[1] | Flip 3 coins.
What is the probability of getting 3 tails? | |
[1] |
A bag has 5 red balls, 9 green balls and 7 blue balls. You take out 1 ball.
What is the probability of getting a red ball or a blue ball? | |
[1] | A wheel has 4 yellow sections and 3 pink sections.
What is the probability of getting yellow? | |
[1] |
| You shoot an arrow at a target. There is a 40% chance of scoring a 30, a 40% chance of scoring a 40, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] | There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.4 | 0.2 | | green | yellow | pink | | Color |
How many green balls were in the bag? | |
[1] |
There are 80 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[1] | You roll 2 3-sided dice
You add the two numbers. What is the probability of getting exactly 4? | |
[1] |
Roll 144 6-sided dice.
How many times would you expect to get an ugly number? | |
[1] | There are 32 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] |
A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score less than 3? | |
[2] | A bag has 9 red balls and 7 blue balls. You take out 1 ball.
What is the probability of getting a blue ball? | |
[1] |
We asked a group of girls how many Oranges they eat in a month. Here are the results:
What fraction of the girls eat less than 3 Oranges in a month? | |
[2] | A wheel has 7 sections, each has a reward in dollars, from $1 through to $7.
What prize do we expect to get if we spin the wheel? | |
[1] |
Flip 7 coins.
What is the probability of getting 7 heads? | |
[1] | The weather forecast says that the chances of rain are 60%. Your chance of being outside today is 90%. 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:
What is the probability of rolling a number that is bigger than or equal to 1? | |
[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 | 0.1 | 0.25 | 0.1 | 0.3 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4 and smaller than 1? | |
[1] |
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