Tree DiagramsCalculate the probability of independent and dependent combined events using tree diagrams. 
This is level 2: more probability questions requiring you to draw your own tree diagrams. You will be awarded a trophy if you get at least 9 correct and you do this activity online. Fractions should be given in their lowest terms.
InstructionsTry your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 




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❎Level 1  Basic probability questions for which the tree diagram has already been drawn
Level 2  More probability questions requiring you to draw your own tree diagrams
Level 3  A challenging puzzle that can be solved with the aid of a tree diagram
Exam Style Questions  A collection of problems in the style of GCSE or IB/Alevel exam paper questions (worked solutions are available for Transum subscribers).
More on this topic including lesson Starters, visual aids, investigations and selfmarking exercises.
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can doubleclick the 'Check' button to make it float at the bottom of your screen.
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Kinglsley, Tanzania
Thursday, May 9, 2024
"One of the answers in Level 2 is wrong. The answer is supposed to be 12/27.
[Transum: Thank you for your feedback Kinglsley. If 12/27 is the correct probability it should be typed in as a faction in its lowest terms. I can see the numerator and the denominator are both multiples of three.]"