A bag has 2 balls with numbers from 3 to 4. You take out 1 ball.
What is the probability of NOT getting the ball with the number 3? | |
[1] | Flip a coin 8 times.
Each time a Tail comes up you win $3. How much money would you expect to make altogether? | |
[1] |
Roll 120 6-sided dice.
How many times would you expect to get a number less than 1? | |
[1] | Roll 42 6-sided dice.
How many times would you expect to get less than or equal to 3? | |
[1] |
There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | | 0.8 | | red | green | purple | | Color |
If you choose a random ball from the bag, what is the probability of it being purple or red? | |
[1] | There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.7 | 0.2 | 0.1 | | pink | yellow | orange | | Color |
If you choose a random ball from the bag, what is the probability of it not being yellow? | |
[1] |
We asked a group of girls how many Pillows they eat in a day. Here are the results:
What fraction of the girls eat exactly 1 Pillows in a day? | |
[2] | Roll 138 6-sided dice.
How many times would you expect to get an ugly number? | |
[1] |
Roll 1 6-sided die.
What is the probability of NOT getting a 5? | |
[1] | A bag has 6 red balls and 10 blue balls. You take out 1 ball.
What is the probability of getting a blue ball? | |
[1] |
| A bag has 6 balls with number 9 and 2 balls with a number 1. What will be the average of the numbers of the balls taken out of the bag | |
[1] | A group of humans were timed running 100m. Here are the results:
What is the probability of the humans to run 100m in exactly 15s?
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[2] |
Roll 36 6-sided dice.
How many times would you expect to get more than 5? | |
[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 2 or smaller than 3? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.5 | 0.1 | | green | red | pink | | Color |
If you choose a random ball from the bag, what is the probability of it being red? | |
[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:
| | 0.3 | | 0.25 | 0.25 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller 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:
| | 0.05 | 0.05 | 0.05 | 0.15 | 0.7 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 3? | |
[1] | A bag has 3 balls with number 5 and 5 balls with a number 5. You take out 1 ball.
What is the probability of getting the ball with the number 5? | |
[1] |
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