go!
probability
H1-F
go!
probability
H1-F
The spinner is spun 3 times &
the scores added.
A biased coin lands on Tails 180 times.
The relative frequency of Tails is 0.45
The spinner is spun 3 times &
the scores added.
A biased coin lands on Tails 180 times.
The relative frequency of Tails is 0.45
What is P(12)?
How many times was
the coin thrown?
What is P(12)?
How many times was
the coin thrown?
9 teams play in a volleyball league.
Each team plays other teams thrice.
The table shows the probabilities
of picking coloured cubes from a bag.
9 teams play in a volleyball league.
Each team plays other teams thrice.
The table shows the probabilities
of picking coloured cubes from a bag.
How many games are played in total?
Red
White Yellow Pink
0.3
0.5𝑥
2𝑥
𝑥
A cube is picked & replaced
240 times, how many non-pink
cubes do we expect to pick?
How many games are played in total?
Red
White Yellow Pink
0.3
0.5𝑥
2𝑥
𝑥
A cube is picked & replaced
240 times, how many non-pink
cubes do we expect to pick?
2 spinners are spun.
From 110 people:
40 play tennis (T), 55 play rugby (R).
2 spinners are spun.
From 110 people:
40 play tennis (T), 55 play rugby (R).
What is P(at least one B)?
What is the probability of
picking two spheres of
the same colour?
of those that play tennis also
play rugby.
play rugby.
What is the probability someone
who plays tennis or rugby plays both?
What is the probability someone
who plays tennis or rugby plays both?
ξ
ξ
T
R
A bag contains 4 blue & 2 pink spheres.
2 spheres are picked.
Complete the tree diagram.
What is P(at least one B)?
of those that play tennis also
Shade
(T ∩ R)’
B
B
P
B
P
P
T
R
A bag contains 4 blue & 2 pink spheres.
2 spheres are picked.
Complete the tree diagram.
What is the probability of
picking two spheres of
the same colour?
Shade
(T ∩ R)’
B
B
P
B
P
P
go!
probability
H1-F
The spinner is spun 3 times &
the scores added.
1 1 1
1
What is P(12)?
× × =
4 4 4 64
A biased coin lands on Tails 180 times.
The relative frequency of Tails is 0.45
9 teams play in a volleyball league.
Each team plays other teams thrice.
The table shows the probabilities
of picking coloured cubes from a bag.
How many games are played in total?
Red
White Yellow Pink
0.3
0.5𝑥
2𝑥
𝑥
A cube is picked & replaced
240 times, how many non-pink
cubes do we expect to pick?
How many times was
the coin thrown?
108
400
= 0.2
0.8 × 240 = 192
2 spinners are spun.
From 110 people:
40 play tennis (T), 55 play rugby (R).
What is P(at least one B)?
A
B
B
C
of those that play tennis also 15
play rugby.
80
What is the probability someone
who plays tennis or rugby plays both?
A
AA
AB
AB
AC
ξ
B
BA
BB
BB
BC
C
CA
CB
CB
CC
8
2
=
12 3
A bag contains 4 blue & 2 pink spheres.
2 spheres are picked.
Complete the tree diagram.
4 3
2 1
14
7
What is the×probability
+
×of =
=
6 spheres
5
6of 5
30 15
picking two
the same colour?
T
R
25
15
Shade
(T ∩ R)’
40
30
4
6
2
6
B
3
5
P
4
5
B
2
5
P
B
1
5
P