Simple
Probability 1
Probability 1
A normal die is rolled. What is the probability of rolling an even number? P(even)
3/6 or 1/2
There are 1 red marble, 2 orange marbles, 3 yellow marbles, and 4 green marbles in a bag. Suppose one marble is selected. What is the probability of selecting an orange marble? P(orange)
2/10 or 1/5
What does the region (cross over) between two sets represent on a Venn diagram?
The people that are in both set A and set B
What is the probability of tossing two fair coins with heads side up? P(heads)
1/4
On a tree diagram, what is the difference between with and without replacement? must say what impact both has on the second selection
with - put back - no effect on 2nd selection
without - don't put back - changes the second selection options
A normal die is rolled. What is the probability of rolling a 4 or a 5? P(4 or 5)
1/3
Use a standard deck of cards. What is the probability of pulling out a diamond? Pr(diamond)
13/52 or 1/4
How do you find the total of a Venn diagram?
the sum of all the elements in the sets and neither.
A normal die is rolled and a spinner labeled A, B, C is spun. Find the probability. P(3 and B)
1/18
You roll a 6 sided dice and then flip a coin. What is the probability of: Pr(even number, a tail)
3/12 = 1/4
A normal die is rolled. What is the probability of not rolling a 1 or a 2? P(not 1 or 2)
4/6 or 2/3
Use a standard deck of cards. What is the probability of pulling out a face card? (king, queen, jack). Express as a fraction.
12/52 = 3/13.
A Venn diagram shows 12 students who play footy only, 8 who play cricket only, and 5 who play both. How many students play footy altogether?
17
A bag contains 10 counters:
What is the probability or (not a green)
8/10 = 4/5
Your teacher will show you a two-way table. You need to fill in the blanks by re drawing it with all the sections filled
missing numbers are:
boys tennis - 17, volley ball total - 19, girls v.ball - 5, girls tennis 31
67 total
Cards from 1-10 are in a deck. What is the probability of pulling perfect squares? P(perfect square)
3/10
Use a standard deck of cards. What is the probability of not pulling out a 5? Express as a fraction.
48/52 = 12/13.
A survey was taken of 20 Year 9 students about the sports they play.
Draw a venn diagram to represent this.
teacher has answer
If a fair coin is tossed three times, what is the probability of getting tails three times in a row? P(three tails)
1/8
Two red counters and two white counters a placed in a bag. Find the probability of choosing a red counter followed by a white counted with replacement. P(red, then white) in order.
Can use a tree diagram to help you
1/4
Suppose two-six sided dice are rolled. Find the probability of rolling the sum of 7. P(sum of 7)
6/36 or 1/6
Letter tiles A - Z are placed in a bag. What is the probability of pulling out a vowel? Express as a fraction. P(vowel)
5/26
look at the Venn diagram from teacher and determine the probability that someone like mango given that they like pineapple.
10/22 = 5/11
There are 1 red marble, 1 orange marble, 1 yellow marble in a bag. Once a marble is drawn, it is not replaced. Draw a tree diagram to represent this AND find the probability of: Pr(Red and orange) in any order
2/6 = 1/3
A group of 40 Year 9 students were surveyed about whether they play a sport and whether they play a musical instrument.
Draw a two way table and fill it
teacher will have answer