Sheet1
Page 1
Probability, Third Edition
By David J Carr & Michael A Gauger
Published by BPP Professional Education
Solution 1.1
(i) AB{3, 5,7} n=
(ii) {2, 4,6,8,10} B'=
.
{2, 3, 4, 5,6,7,8,10} AB '.
Err:520
(iii) {1,2,3,5,7, 9} AB.=
.
( ) {4, 6,8,10} AB'.
Err:520
Solution 1.2
1,9 3,5,7
A B
4,6,8,10
S
2
Solution 1.3
We have:
(AB)=Pr A+Pr ()
-Pr AB)=0.4 +0.3 -0.15 =0.55 Pr .
()
B (n
Solution 1.4
We have:
Pr (A.B)=1 -Pr ( (AB )').
.1.5Pr ()A=1 -Pr()A
.Pr ()A=0.4
.
Solution 1.5
By considering a Venn diagram, or otherwise, we have:
Pr A +Pr B nA'=Pr A .B =0.8
and since (from the question) Pr ()=Pr BA')
()(
Solutions to practice questions h
Chapter 1
Probability Solutions to practice questions h
Chapter 1