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WorksheetsProbability for Grade 9 Standard
Total questions: 21
Worksheet time: 26mins
How many total outcomes are there?
What is the probability of rolling an even number and flipping a head?
Two dice are rolled and it is recorded whether the result on each is odd or even. What is the probability both are odd?
1/4
1/2
2/4
3/4
A box contains 3 brand A batteries and 7 brand B batteries. 30% of brand A batteries are faulty and 40% of brand B batteries are faulty. A battery is selected at random and then checked to see if it is faulty. What is the probability that a faulty brand B battery is selected?
0.28
1/4
0.42
0.21
A bag contains 3 lemons and 2 limes. A piece of fruit is taken from the bag and not put back. Then a second piece is taken. What is the probability of taking two limes?
1/10
2/5
5/20
4/20
A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?
3/10
30%
1/9
1/3
The theoretical probability of rolling an even number on a dice.
3
1/2
1/6
5/6
You spin the spinner. How many possible outcomes are there?
4
8
1
6
A fruit basket contains 9 apples, 3 bananas, 7 oranges, 5 pears, and 1 grapefruit. Kyle randomly chooses a fruit, does not replace it, then chooses another. What is the probably that he chose two pears?
9/49
4/125
1/10
1/30
How many students do not snowboard?
21
22
28
29
The diagram shows the sports played by 80 students.
How many students play football?
66
4
18
49
How many people can't speak a foreign language or play a sport?
23
14
3
10
P(not A) =
*Remember to simplify.*
6/8
3/4
2/8
1/4
