Each branch of a tree diagram places the probability together with its respective possible outcome.

The end of each branch has a node which can start new branches depending on the possibile outcomes.

Keep in mind that the sum of probabilities of the branches of each node is 1.


A class consists of six girls and 10 boys. If a committee of three is chosen at random, find the probability of:

1 Three boys being chosen.

2Exactly two boys and a girl being chosen.

3Exactly two girls and a boy being chosen.

4 Three girls being chosen.

Calculate the probability of three coins landing on:

Three heads.


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I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.

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