The weather forecast says that the chances of rain are 80%. Your chance of being outside today is 70%. You flip a coin to decide whether to take your umbrella.
What is the probability of getting wet today? | |
[1] | A group of people did a math test and here are their scores out of 5:
What fraction of the people score less than 5? | |
[2] |
You flip a coin and roll a 5 sided die.
What is the probability of getting a 4 and a head? | |
[1] | Flip a coin 4 times.
Each time a head comes up you win $4 and with each tail you lose $2. How much money would you expect to make altogether? | |
[1] |
Roll 2 6-sided dice.
What is the probability of getting 2 numbers that are even? | |
[1] | Roll 12 6-sided dice.
How many times would you expect to get less than 2? | |
[1] |
A bag has 5 balls with numbers from 1 to 5. You take out 1 ball.
What is the probability of NOT getting the ball with the number 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:
What is the probability of rolling a number that is bigger than 3? | |
[1] |
| You shoot an arrow at a target. There is a 80% chance of scoring a 20 and a 20% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | We asked a group of boys how many Apples they eat in a day. Here are the results:
What is the probability of the boys to eat less than 1 Apples in a day? | |
[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 less than 4? | |
[2] | A wheel has 3 red sections and 4 purple sections.
What is the probability of getting red? | |
[1] |
There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.9 | | yellow | blue | pink | | Color |
How many pink balls were in the bag? | |
[1] | Flip 2 coins.
What is the probability of getting 2 tails? | |
[1] |
A wheel has 4 red sections and 4 pink sections.
What is the probability of getting red? | |
[1] | The weather forecast says that the chances of rain are 60%. Your chance of being outside today is 50%. The chance of remembering your umbrella is 60%.
What is the probability of getting wet today? | |
[1] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a number equal to 1 and a tail? | |
[1] |