Question

Probabilities

A box of 25 Lego blocks contains 2 yellow square blocks, 3 yellow rectangular blocks, 4 blue square blocks, 8 blue rectangular blocks, 4 green square blocks, and 4 green rectangular blocks.

Use this information for problems 4 through 7.

4. What is the probability of choosing a block that is blue?

7. If you choose two blocks (without replacement of the first), find the probability of getting a square block on the first and rectangular block on the second.

8. If you choose two blocks (with the replacement of the first and shaking the box for the second draw), find the probability of getting a square block on the first and rectangular block on the second.  

9. At a coffee stand, you can order a small, medium, or large coffee with or without cream. Use a tree diagram to find the number of possible outcomes. List the elements that make up the sample space.

Answer 1

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