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What do you notice? What do you wonder?
What is the probability of getting:
Your teacher will assign you to use either a list, table, or tree. Be prepared to explain your reasoning.
A number cube is rolled and a coin is flipped.
What is the probability of getting heads and an odd number?
Pause here so your teacher can review your work.
You may use any method you wish to answer these questions. Suppose you roll two number cubes. What is the probability of getting:
Both cubes showing the same number?
Exactly one cube showing an even number?
At least one cube showing an even number?
Two values that have a sum of 8?
Imagine there are 5 cards. On one side they look the same and on the other side they are colored red, yellow, green, white, and black. You mix up the cards and select one of them without looking. Then, without putting that card back, you mix up the remaining cards and select another one.
What is the probability that:
Suppose we have two bags. One contains 1 star block and 4 moon blocks. The other contains 3 star blocks and 1 moon block.
If we select 1 block at random from each, what is the probability that we will get 2 star blocks or 2 moon blocks?
To answer this question, we can draw a tree diagram to see all of the possible outcomes.
There are possible outcomes. Of these, 3 of them are both stars, and 4 are both moons. So the probability of getting 2 star blocks or 2 moon blocks is .
In general, if all outcomes in an experiment are equally likely, then the probability of an event is the fraction of outcomes in the sample space for which the event occurs.