A bag has 4 balls with numbers from 1 to 4. You take out 1 ball.
What is the probability of NOT getting the ball with the number 5? | |
[1] | A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in exactly 15s?
| |
[2] |
A bag has 3 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] | | You shoot an arrow at a target. There is a 90% chance of scoring a 30 and a 10% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] |
A bag has 4 red balls, 8 blue balls and 3 yellow balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting blue 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:
What is the probability of rolling a number that is bigger than 4 and smaller than 5? | |
[1] |
Roll 72 6-sided dice.
How many times would you expect to get more than 3? | |
[1] | A group of girls were timed running 100m. Here are the results:
What is the probability of the girls to run 100m in more than 17s?
| |
[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 2 and smaller than 1? | |
[1] | The weather forecast says that the chances of rain are 80%. The chance of remembering your umbrella is 60%. Your chance of being outside today are 40%.
What is the probability of getting wet today? | |
[1] |
| A bag has 7 balls with number 4 and 6 balls with a number 9. What will be the average of the numbers of the balls taken out of the bag | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.5 | 0.5 | | pink | orange | | Color |
Probability of Type
| | 0.9 | 0.1 | | sedan | wagon | | Type |
What is the probability of a car being a orange sedan? | |
[2] |
A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in exactly 17s?
| |
[2] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 2 or a 2 and a head or a tail? | |
[1] |
We asked a group of people how many Bananas they eat in a day. Here are the results:
What fraction of the people eat exactly 1 Bananas in a day? | |
[2] |