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​​Probability: Quiz 2 – Answers

1)

a) 1/6

b) 1/6

c) 1/2

d) 2/3

e) 1/3

f) 1

g) 0

 

2) 

a) 3/4

b) 1/4

 

3) 0.35

 

4)

a) 0.2

b) 0.4

 

5)

a) 0.5

b) 0.1

Working
Questions
1) We have a fair 6-sided dice. Work out the probability of the following events occurring:
a) the dice landing on a 6
​b) the dice landing on 3
c) the dice landing on an even number
d) the dice landing on a number that is greater than 2
e) the dice landing on a number that is 2 or less than 2
g) the dice landing on a number that is less than 10
f) the dice landing on a number that is greater than 7
 
2) A bag contains 12 balls. 9 of the balls are green and 3 of the balls are red. We pick a ball out of the bag. What is:
a) the probability of picking a green ball?
b) the probability of picking a red ball?
 
3) A bag contains balls that are either pink, orange or blue. The probability of picking a pink ball is 0.4 and the probability of picking an orange ball is 0.25. What is the probability of picking a blue ball?
 
4) A bag contains yellow, green and brown balls. The probability of picking a green ball is 0.4. The probability of picking a yellow ball is twice the probability of picking a brown ball. What is:
a) the probability of picking a brown ball?
b) the probability of picking a yellow ball?
 
5) A football team can win, lose or draw. The team has an even chance of winning and the probability that the team loses is 0.4. What is:
a) the probability that the team wins?
b) the probability that the team draws?