3. Which of these probabilities is not
possible?
A ¾
B 0.5
C -1
D 73%
4. What is the missing value?
Colour Red Blue Green Yellow
Prob. 5/12 1/12 5/12
A 1 in 12
B 1/12
C 1 out of 12
D 1:12
5. What is the missing value?
Colour Red Blue Green Yellow
Prob. 0.4 0.16 0.25
6. What is the missing value?
Colour Red Blue Green Yellow
Prob. 0.4 0.16 0.25
What is the probability of getting Yellow or Blue?
7. What is the missing value?
Colour Red Blue Green Yellow
Prob. 7/20 3/10 1/4
A 1/10
B 1/2
C 1/5
D 9/20
8. If the probability of it raining
tomorrow is 0.56, what is the
probability of it not raining?
9. If I throw a dice 300 times, how
many times would I expect to
get a “2”
10. I flip a biased coin 20 times and get
14 heads.
How many heads would I expect to
get if I threw it 60 times?
11. The probability of Sharon buying a
magazine is 0.4 and the probability
of buying a book is 0.2.
What is the probability that Sharon
buys both?
12. The probability of choosing a red counter
out of a bag is 4/7 and the probability of
choosing a green counter is 2/5.
What is the probability of choosing a red
counter, replacing it, and then choosing a
green counter?
A 8/35
B 6/12
C 34/35