Flip a coin 2 times.
Each time a head comes up you win $2 and with each tail you lose $1. How much money would you expect to make altogether? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.4 | 0.6 | | yellow | orange | | Color |
Probability of Type
| | 0.6 | 0.4 | | wagon | sedan | | Type |
What is the probability of a car being a yellow wagon? | |
[2] |
Roll 2 6-sided dice.
You add the two numbers. What is the probability of getting 12? | |
[1] | There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.5 | 0.1 | | purple | pink | red | | Color |
If you choose a random ball from the bag, what is the probability of it being purple or pink? | |
[1] |
We asked a group of girls how many Chocolates they eat in a day. Here are the results:
What fraction of the girls eat less than 2 Chocolates in a day? | |
[2] | A wheel has 10 sections, each a different color.
What is the probability of getting yellow? | |
[1] |
An obstacle course has 1 Fences and 2 Ditches. You have a 80% chance of clearing a Fence and a 100% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] | Roll 18 6-sided dice.
How many times would you expect to get a number less than 4? | |
[1] |
| You shoot an arrow at a target. You will either score 10 (10% chance), 40 (40% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] | We asked a group of boys how many Popsicles they eat in a day. Here are the results:
What is the probability of the boys to eat exactly 3 Popsicles in a day? | |
[2] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.4 | 0.6 | | red | pink | | Color |
Probability of Type
| | 0.3 | 0.7 | | sedan | wagon | | Type |
What is the probability of a car being a pink sedan? | |
[2] | A wheel has 8 orange sections and 2 pink sections.
What is the probability of getting orange? | |
[1] |
Roll a die 18 times.
How many times would you expect to get a 3? | |
[1] | A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score less than 0? | |
[2] |
There are 50 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] |