1. Probability of two events
Tuesday, 19 February 2019

2. Two fair coins are thrown.
Example
Two fair coins are thrown.
Draw a sample space diagram to show all possible outcomes.
What is the probability of obtaining two heads when two coins are thrown?
2nd coin T H H T
1st coin

3. Example
Two dice are thrown and the total score is obtained by adding the two values together.
Draw up a table to show all the possible scores available.
What is the probability of obtaining a score of 8?

4. Example
School lunch has on offer Beef burgers, Chicken burger or veggie burger, served with either French fries, jacket potato or salad.
Draw up a table to show all the possible combinations that could be ordered.

5. Example
In my left pocket I have four coins. They are 2p, 5p, 5p and 10p
In my right pocket I have five coins. They are 2p, 1p, 5p, 10p, 10p
Two coins are chosen at random, one from each pocket.
Draw up a sample space diagram and use it to find the probability that the total value of the coins is 12p.