Roll 138 6-sided dice.
How many times would you expect to get more than 4? | |
[1] | A bag has 7 red balls, 8 blue balls and 9 yellow balls. You take out a red ball, then a yellow ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] |
A bag has 5 red balls, 4 blue balls and 8 yellow balls. You take out a yellow ball, then a yellow ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | Roll 1 6-sided die.
What is the probability of getting a number smaller than 3? | |
[1] |
There are 40 balls in a bag. This is is the probability distribution of their color:
How many green balls were in the bag? | |
[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 4? | |
[2] |
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 more than 1? | |
[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 smaller than or equal to 3? | |
[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 1 or smaller than 3? | |
[1] | A bag has 9 balls with numbers from 4 to 12. You take out 1 ball.
What is the probability of NOT getting the ball with the number 10? | |
[1] |
| You shoot an arrow at a target. There is a 40% chance of scoring a 10, a 40% 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 3 red balls and 5 blue balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[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:
| | 0.45 | 0.1 | 0.25 | 0.1 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 5 and smaller than 4? | |
[1] | We asked a group of boys how many Peaches they eat in a day. Here are the results:
What fraction of the boys eat exactly 1 Peaches in a day? | |
[2] |
Roll 12 6-sided dice.
How many times would you expect to get less than or equal to 5? | |
[1] | A group of dogs were timed running 100m. Here are the results:
What fraction of the dogs run 100m in less than 15s?
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[2] |
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