In how many ways is it possible to sit two people in a row

Oldest

Best Reply

Author

Message

TAGS:

Intern

Joined: 31 Mar 2004

Posts: 29

Location: texas

Followers: 1

Kudos [?]: 0 [0], given: 0

In how many ways is it possible to sit two people in a row [#permalink]

30 Jun 2004, 07:01

00:00

Question Stats:

0% (00:00) correct

0% (00:00) wrong

based on 0 sessions

In how many ways is it possible to sit two people in a row of four seats if there must be

A.. one space in between them

B... At least one space in between them

Senior Manager

Joined: 26 Jan 2004

Posts: 428

Location: India

Followers: 1

Kudos [?]: 0 [0], given: 0

[#permalink]

30 Jun 2004, 07:40

A) 4
a-b-
-a-b
-b-a
b-a-

B)6
(4 combinations as mentioned above)+
a--b
b--a

Manager

Joined: 10 Jun 2004

Posts: 84

Followers: 1

Kudos [?]: 0 [0], given: 0

[#permalink]

30 Jun 2004, 07:53

I am not pretty sure but this is my try :roll:

I will slove it by the simple way
a)
the seat 1 2 3 4

the possibility 2 - 1 -= 2

the possibility - 2 - 1= 2

The total or possible ways = 2+2=4
b)
2 - - 1= 2
1 - - 2= 2
THe total of possible ways = 2+2=4

Correct me if I am mistaken

BTW if any one know another way to solve it please share it with the club.

Good luck all
_________________

-Genius is one percent inspiration, and ninety-nine percent perspiration.

GMAT Club Legend

Joined: 15 Dec 2003

Posts: 4441

Followers: 10

Kudos [?]: 82 [0], given: 0

[#permalink]

30 Jun 2004, 21:16

mba is right on this one
sabr, IMO the easiest way for a problem where there is a limited # of possible outcomes is to just draw them out as mba did.
_________________

Best Regards,

Paul

[#permalink] 30 Jun 2004, 21:16

		Similar topics	Author	Replies	Last post
Similar Topics:		In how many ways can 15 people be seated around two round	Praetorian	1	20 Sep 2003, 11:14
		6 person sit around a table. In how many ways can they sit	mahesh004	6	26 May 2006, 04:50
		In how many ways can you seat 3 people in a row of 101	young_gun	8	02 Oct 2007, 12:46
	1	4 people - sitting in a row seat	eladshus	3	18 Oct 2010, 12:40
	2	In how many ways can you sit 8 people on a bench if 3 of	Gavan	3	12 Mar 2012, 09:23

In how many ways is it possible to sit two people in a row

Main navigation

GMAT Resources

Partners

MBA Resources

GMAT ® is a registered trademark of the Graduate Management Admission Council ® (GMAC ®). GMAT Club's website has not been reviewed or endorsed by GMAC.

GMAT Courses

Admissions Consulting

In how many ways is it possible to sit two people in a row

In how many ways is it possible to sit two people in a row

Main navigation

GMAT Resources

Partners

MBA Resources