WorksheetsYear 7 Probability Quiz
Total questions: 42
Worksheet time: 42mins
What is the chance of the following event occurring:
New Year's Day will be on 1 January next year.
Certain
Likely
Even Chance
Unlikely
Impossible
What is the chance of the following event occurring:
Water will boil in the fridge.
Certain
Likely
Even Chance
Unlikely
Impossible
What is the chance of the following event occurring:
There will be snow at Thredbo this winter.
Certain
Likely
Even Chance
Unlikely
Impossible
What is the chance of the following event occurring:
You will grow 18cm taller this year.
Certain
Likely
Even Chance
Unlikely
Impossible
What is the chance of the following event occurring:
You roll a fair die and obtain an odd number.
Certain
Likely
Even Chance
Unlikely
Impossible
Which of the following spinners corresponds to the statement: 'Blue, red and green are all possible, but no two colours are equally likely'?
Which of the following spinners corresponds to the statement: 'Red is impossible'?
Which of the following spinners corresponds to the statement: 'Blue and green are equally likely, but red and green are not equally likely'?
A spinner with the numbers 1 to 7 is spun. How many outcomes are in the sample space?
6
7
8
9
10
A letter is chosen at random from the word EXCELLENT. How many outcomes are in the sample space?
6
7
8
9
10
A bag of marbles contains 3 blue marbles, 2 green marbles and 5 red marbles. A marble is chosen at random. The probability that the marble selected is blue is:
1/5
3/10
2/5
1/2
3/5
A bag contains 3 white, 2 yellow and 5 black balls. If a ball is drawn at random, the probability of a white ball is:
1/10
1/3
3/7
3/10
1/2
Each letter of the word APPLE is written separately on five cards. One card is then chosen at random. P(letter P) is:
0
1/5
2/5
1/2
1
The letters of the word STATISTICS are placed on 10 different cards and placed into a hat. If a card is drawn at random, the probability that it will show a vowel is:
1/5
3/10
2/5
1/2
7/10
A bowl holds 9 red, 5 green and 6 black jellybeans. If a jellybean is taken at random from the bowl, what is the probability that it is either red or black?
2/3
3/4
7/10
9/11
11/20
A drawer contains 13 black socks, 14 white socks and 8 grey socks. If one sock is selected at random, what is the probability that it is black or white?
13/35
14/35
8/35
22/35
27/35
This spinner is spun 10 times, giving the results: 2, 5, 3, 5, 1, 2, 3, 3, 4, 6. The experimental probability of getting a 2 is:
1/5
1/6
4/5
1/4
1/3
The results of a survey are shown in the table. Note that each student learns only one instrument. Based on the survey, the experimental probability that a randomly selected survey participant is learning the guitar is:
1/4
1/2
3
3/5
3/20
A fair 6-sided die is rolled 600 times. The expected number of times that the number rolled is either 1 or a 2 is:
100
200
300
400
600
An experiment is conducted in which three dice are rolled and the sum of the faces is added. In 12 of the 100 trials, the sum of the faces is 11. Based on this, the experimental probability of having three faces add to 11 is:
11/100
12/111
3/25
12
1/2
The number of children in some families is recorded in the table shown. If 'no children' is an event, what is the complementary event?
0, 1, 2 or 3 children
1, 2, 3 or 4 children
0, 1, 3 or 4 children
0, 1, 2 or 4 children
0, 2, 3 or 4 children
The colour of the cars in a school car park are recorded. Based on this sample, what is the probability that a randomly chosen car is white?
3/100
1/4
1/5
2/5
3/5
The colour of the cars in a school car park are recorded. Based on this sample, how many purple cars would you expect to see in a shopping centre car park with 2000 cars?
30
60
90
120
150
The colour of the cars in a school car park are recorded. Based on this sample, if 'red or black' is an event, what is the complementary event?
Red, Black, Purple or Green
Black, White, Blue or Purple
Red, White, Blue or Purple
Red, Black, White or Blue
White, Blue, Purple or Green
A fair die is rolled. The probability that the number will be greater than 4 is:
1/2
1/6
3/4
1/3
5/6
A survey conducted on people's weekly television viewing habits revealed the following results. What is the probability that a randomly selected participant watches between 5 and 20 hours of television per week?
1/10
3/20
7/20
1/2
4/5
When a fair die is rolled, what is the probability that the number is even but not less than 3?
0
1/6
1/3
1/2
2/3
One of these cards is selected at random. What is the probability that the number on the card is either odd or less than 5.
0
1/5
2/5
3/5
4/5
A card is drawn at random from a standard pack of playing cards. What is the probability that the card is a black heart?
0
1/4
1/2
3/4
1/26
A card is drawn at random from a standard pack of playing cards. What is the probability that the card is either black or a heart?
0
1/4
1/2
3/4
1
A ticket is chosen at random from a hat. The probability that the ticket is green is 1/12 and the probability that it is blue is 5/12. What is the probability that the ticket is neither blue nor green?
1/12
5/12
1/2
7/12
2/3
A number is chosen at random from the whole numbers 1 to 12 inclusive. What is the probability that the number is even or less than 8, but not both?
5/12
1/2
7/12
5/6
2/3
Which shaded region represents the complement of A?
Which shaded region represents A or B or both?
Refer to the Venn diagram of the results of a survey of Year 7's after-school activities for the previous day. How many students participated in the survey?
23
24
25
26
27
Refer to the Venn diagram of the results of a survey of Year 7's after-school activities for the previous day. How many students did not watch TV for that day?
5
6
7
8
9
Refer to the Venn diagram of the results of a survey of Year 7's after-school activities for the previous day. Which of the activities did most students do after school?
Only play sport
Play both sport and watch TV
Only watch TV
Watch neither TV or play sport
None of the above
This two-way table shows the number and colour of ribbons won in a competition by some students. What is the probability that a boy chosen at random won a blue ribbon?
2/3
2/5
3/8
1/3
1/5
This two-way table shows the number and colour of ribbons won in a competition by some students. What is the probability that a red ribbon was won by a girl?
5/9
5/14
1/2
1/3
1/6
Refer to the two-way table of the results of a survey of Year 7's ice cream flavour preferences. Which Venn diagram represents this information?
Which of the following statements is not true?
The sum of the probabilities of an event and its complement is equal to 1.
If you are 12 the probability that on your next birthday you will turn 13 is 1.
If a fair coin is tossed 15 times and 13 heads are counted, the next throw is more likely to be a tail.
Mutually exclusive events cannot both occur at the same time.
The experimental probability will not always match the theoretical probability.
Rachel has a fair coin. She has tossed 'heads' five times in a row. Rachel tosses the coin one more time. What is the probability of tossing 'tails'?
0
1
1/2
less than 1/2
more than 1/2
