499,859 views
20 votes
20 votes
In how many ways can nine members of committee sit at the round table so that secretary and the joint secretary are always the neighbours of the president? 

User Chee Loong Soon
by
2.3k points

2 Answers

17 votes
17 votes
1440 answer hope this helps
User John Maloney
by
2.8k points
13 votes
13 votes

Answer:

1440

Step-by-step explanation:

Members except president, secretary and joint secretary = 9−3=6

Their arrangement = 6!

No. of arrangements of secretary and joint secretary at wto places

=2!=2

Total arrangement =2×6!

2 x 6! = 1440

User Daniel Twigg
by
3.2k points