2007 H2 Mathematics
Paper 2 Question 9
A group of people consists of married couples.
(a)
The group stands in a line.
(i)
Find the number of different possible orders.
[1]
(ii)
Find the number of different possible orders in which each man stands next to his wife.
[3]
(b)
The group stands in a circle.
(i)
Find the number of different possible arrangements.
[1]
(ii)
Find the number of different possible arrangements if men and women alternate.
[2]
(iii)
Find the number of different possible arrangements if each man stands next to his wife and men and women alternate.
[2]