Complementary Events
Theoretical Probability
Experimental Probability
Expected Number
100
The chance of a sunny day is 1/3, so the chance of a cloudy day is
2/3
100
If you toss a fair die once, the chance of getting a number less than 7 is: (impossible, unlikely, even chance, likely, certain)
certain
100
The chance of rain this month is 10%. How many days is rain expected in 30 days?
3
100
The experimental probability that a person uses public transport is 50%. Out of 500 people how many would you expect to use public transport?
250
200
The chance of winning at lucky dip is 4/5. What is the chance of not winning?
1/5
200
The chance of winning powerball tonight if you have a ticket is: (impossible, unlikely, even chance, likely, certain)
unlikely
200
Jasmine flipped a coin 50 times. She flipped tails 24 times. Find the experimental probability of getting tails as a fraction.
24/50
200
The chance of a flower having 6 petals is 3/4. What is the expected number of flowers that have 6 petals in a bunch of 20 flowers?
15
300
There are 3 blue, 2 red and 3 green jellybeans in a jar. What is the chance of not selecting green as a fraction?
5/8
300
In a coin toss, what is the chance of flipping heads?
1/2
300
James spun this spinner 20 times and it landed on X 8 times. Find the experimental probability of getting an X as a fraction.
8/20
300
Lucy rolled a dice 60 times. How many times would she expect a five to appear?
10
400
In the refrigerator there are twelve strawberry yoghurts, seven passionfruit yoghurts and one mango yoghurt. Mum reaches into the refrigerator and takes a yoghurt out at random. The probability that the yoghurt is mango flavoured is (as a percentage):
5%
400
There are 3 blue, 2 red and 3 green jellybeans in a jar. If you take one out, what is the likelihood it is green?
3/8
400
The table shows the results of rolling a die 90 times:
What is the experimental probability of rolling a 2?
12/90
400
The chance of "Legends" team winning their cricket game is 1/4. How many times would you expect the "Legends" to win a cricket match out of 40 games?
10
500
99 students were asked if they choose to study on the night before an exam or choose to party. 51 students choose to party while 59 choose to study. 10 neither choose to study nor party. Find the probability that a student chosen at random chose not to party as a fraction.
69/99
500
In a dice roll, state the theoretical probability of getting an even number as a fraction.
1/2
500
The table shows the fighting style of each competitor in a mixed martial arts tournament fought last year. Find the experimental probability of a wrestler winning.
54/200
500
A fair dice is rolled 240 times. How many times would you expect it to land with a five on top?
40