Thesis Paper
MEP: Demonstration Project
UNIT 6
1.
Teacher Support Y9A
Probability
Extra Exercises 6.1
The following probability line shows the probabilities of 6 events, A, B, C, D, E and F.
A
B
C
0
D
E
F
0.5
1
(a)
(b)
Which event is the most unlikely to occur, but is not impossible?
(c)
Which event is impossible?
(d)
2.
Which event is certain to occur?
Which events are more likely to occur than C?
The diagram shows a jar containing red (R), blue (B) and white (W) balls. One of the balls is taken at random.
R
WW R
W
B RW
RB
W
RRW
RR
WR
W
R
(a)
(b)
3.
What colour is this ball most likely to be?
What colour is this ball least likely to be?
In a game you are given one of the following cards at random:
1
2
3
4
5
6
7
(a)
Are you more likely to be given an odd number or an even number?
(b)
Are you more likely to be given a 7 than a 5 ?
(c)
Are you more likely to be given a number greater or less than 5?
© The Gatsby Charitable Foundation
MEP: Demonstration Project
UNIT 6
1.
Probability
a mint,
(b)
a toffee,
(c)
a chocolate,
(d)
a mint or a toffee,
(e)
not a mint,
(f)
a chocolate or a toffee?
The diagram shows a spinner. What is the probability that, with one spin, your score is:
(a)
2,
(c)
greater than 2,
(d)
less than 4,
(e)
1
2
1
1,
(b)
3.
Extra Exercises 6.2
A sweet jar contains 10 toffees, 8 mints and 12 chocolates. A sweet is taken at random from the jar. What is the probability that the sweet is:
(a)
2.
Teacher Support Y9A
an even number?
3
6
5
4
1
Ahmed rolls a fair dice 300 times. How many times would he expect to obtain:
(a)
6,
(b)
an even number,
(c)
a number greater than 1,
(d)
a number less than 3,
(e)
a 2 or a 5 ?
© The Gatsby Charitable Foundation
MEP: Demonstration Project
UNIT 6
1.
Teacher Support Y9A
Probability
Extra Exercises 6.1
The following probability line shows the probabilities of 6 events, A, B, C, D, E and F.
A
B
C
0
D
E
F
0.5
1
(a)
(b)
Which event is the most unlikely to occur, but is not impossible?
(c)
Which event is impossible?
(d)
2.
Which event is certain to occur?
Which events are more likely to occur than C?
The diagram shows a jar containing red (R), blue (B) and white (W) balls. One of the balls is taken at random.
R
WW R
W
B RW
RB
W
RRW
RR
WR
W
R
(a)
(b)
3.
What colour is this ball most likely to be?
What colour is this ball least likely to be?
In a game you are given one of the following cards at random:
1
2
3
4
5
6
7
(a)
Are you more likely to be given an odd number or an even number?
(b)
Are you more likely to be given a 7 than a 5 ?
(c)
Are you more likely to be given a number greater or less than 5?
© The Gatsby Charitable Foundation
MEP: Demonstration Project
UNIT 6
1.
Probability
a mint,
(b)
a toffee,
(c)
a chocolate,
(d)
a mint or a toffee,
(e)
not a mint,
(f)
a chocolate or a toffee?
The diagram shows a spinner. What is the probability that, with one spin, your score is:
(a)
2,
(c)
greater than 2,
(d)
less than 4,
(e)
1
2
1
1,
(b)
3.
Extra Exercises 6.2
A sweet jar contains 10 toffees, 8 mints and 12 chocolates. A sweet is taken at random from the jar. What is the probability that the sweet is:
(a)
2.
Teacher Support Y9A
an even number?
3
6
5
4
1
Ahmed rolls a fair dice 300 times. How many times would he expect to obtain:
(a)
6,
(b)
an even number,
(c)
a number greater than 1,
(d)
a number less than 3,
(e)
a 2 or a 5 ?
© The Gatsby Charitable Foundation
MEP: Demonstration Project