Sample space diagrams 1. A blue and a red dice are thrown and the scores added together. (a) Complete the sample space diagram. (b) What is the probability.

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Presentation transcript:

Sample space diagrams 1. A blue and a red dice are thrown and the scores added together. (a) Complete the sample space diagram. (b) What is the probability of scoring a 4? (c) What is the probability of scoring a 9? (d) What is the probability of scoring 10 or more? (e) What is the probability of scoring 5 or less? 2. Two spinners A and B are spun and the scores are added together. (a) Complete the sample space diagram. (b) What is the probability of scoring a total of 2? (c) What is the probability of getting an even total? (d) What is the probability of getting a total that is a multiple of 3?

3. Three cards are numbered 1, 3 and 4 3. Three cards are numbered 1, 3 and 4. Three discs are numbered 21, 4 and 5. 1 3 4 21 4 5 A game consists of picking one card at random and one disc at random. The number on the card is subtracted from the number on the disc. 21 4 5 1 20 3 Disc (a) Complete the sample space diagram. (b) What is the probability of scoring 1? Card (c) What is the probability of scoring 4 or more? (d) What is the probability of getting an even score? 4. Two bags, A and B, each contain four numbered discs that are all the same size. Bag A X 1 3 5 7 2 6 4 8 A B A disc is drawn at random from bag A and a disc is drawn at random from bag B. A score is obtained by multiplying the numbers on the two discs. Bag B (a) Complete the sample space diagram. (b) What is the probability of scoring less than 20? (c) What is the probability of scoring more than more than 18?