1. Probability Aim: To be able to recognise, interpret and use probability tree diagrams. Keywords: Random, Bias, Replaced, Without replacing

2. H H H T T T A tree diagram may be used to show all possible outcomes.

3. H H H T T T Outcomes/possibilities H H H T T H T T How many outcomes are there?

4. Fill in the empty boxes.

5. Fill in the empty boxes.

6. Q : A bag contains 3 red and 2 blue beads. A bead is chosen at random, its colour noted and then put back. A second bead is then taken from the bag. Draw a tree diagram to show this situation and list all the possible outcomes.

8. Q : A bag contains 3 red and 2 blue beads. A bead is chosen at random and not replaced . A second bead is then taken from the bag. Draw a tree diagram to show this situation and list all the possible outcomes.