Flip a coin 8 times.
How many times would you expect to get Heads? | |
[1] | There are 22 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[1] |
A bag has 5 red balls and 10 blue balls. You take out a blue ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | A group of dogs were timed running 100m. Here are the results:
What fraction of the dogs run 100m in less than 13s?
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[2] |
We asked a group of people how many Chocolates they eat in a month. Here are the results:
What is the probability of the people to eat more than 1 Chocolates in a month? | |
[2] | Roll 30 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
| You shoot an arrow at a target. There is a 60% chance of scoring a 10, a 10% chance of scoring a 50, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 6 or a 6 and a head? | |
[1] |
There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.7 | | yellow | purple | red | | Color |
If you choose a random ball from the bag, what is the probability of it not being red or yellow? | |
[1] | Roll 72 6-sided dice.
How many times would you expect to get a number more than 5? | |
[1] |
A bag has 4 red balls and 8 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] | A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score more than 3? | |
[2] |
| You shoot an arrow at a target. You will either score 20 (50% chance), 30 (10% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.1 | 0.7 | | pink | orange | purple | | Color |
If you choose a random ball from the bag, what is the probability of it being orange or purple? | |
[1] |
Flip a coin 14 times.
Each time a Tail comes up you win $3. It costs $26 to play (paid once). How much money would you expect to make altogether? | |
[1] | Flip 2 coins.
What is the probability of getting 2 tails? | |
[1] |
A bag has 6 red balls, 10 blue balls and 3 yellow balls. You take out a yellow ball, then a blue ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] |