Day Three Try these. 1


Draw 12 contestants in a car race. There are five different colour cars in the race. There is a 25% chance that red will win. There is a 1 in 6 chance that black will win. There is a 33 1


3% chance that green will win. Two of the cars are orange. The


remaining cars are yellow. What are the chances that a yellow car will win? Write your answer as a fraction.


Answer: 2


Marks:


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What are the chances that a green or black car will win the race in question 1? Write your answer in fraction and percentage form.


Answer: 3


Marks:


In groups of four, sit in a circle. Take off your shoes and place them in the middle of the circle in no particular order. Each pupil in the group must take a turn closing their eyes and picking up a shoe in each hand 25 times. Each pupil in the group must also take a turn recording the outcome of this investigation in their frequency chart below, so that when you combine your tallies at the end, you will get a result out of 100.


Outcome


Left and left Right and right Right and left


Using the results in the frequency chart, complete the following statements:


ƒ The chances of picking up two left shoes are in 100.


ƒ The chances of picking up two right shoes are in 100.


ƒ The chances of picking up a left shoe and a right shoe are


in 100.


Compare and discuss your results with those of other groups.


110 Marks: Today’s Marks: /2 /6


Frequency Chart Tally


Total


Duties Reader


Calculator Checker Reporter Keywords


A frequency chart is a table used to record how often something happens.


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Week 26 | Chance


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