It is currently 22 Nov 2017, 17:20

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# There are 3 roads from Pittsburgh to Ocean City, Md and

Author Message
Eternal Intern
Joined: 07 Jun 2003
Posts: 463

Kudos [?]: 169 [0], given: 0

Location: Lone Star State
There are 3 roads from Pittsburgh to Ocean City, Md and [#permalink]

### Show Tags

29 Jul 2003, 18:44
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

There are 3 roads from Pittsburgh to Ocean City, Md and four roads from Ocean city, Md. to Bay City,CA. If Allison drives from Pittsburgh to Bay City, CA and back, passes from Ocean City in both directions, and does not travel any road twice, how many different routes for the trip are possible?

Hint: I thought 48, it is not
_________________

Ride em cowboy

Kudos [?]: 169 [0], given: 0

Eternal Intern
Joined: 07 Jun 2003
Posts: 463

Kudos [?]: 169 [0], given: 0

Location: Lone Star State

### Show Tags

29 Jul 2003, 20:29

Let's subtract a 100 points from CEO's score and give it to me who needs the curve?
_________________

Ride em cowboy

Kudos [?]: 169 [0], given: 0

Founder
Joined: 04 Dec 2002
Posts: 15879

Kudos [?]: 29108 [0], given: 5267

Location: United States (WA)
GMAT 1: 750 Q49 V42

### Show Tags

29 Jul 2003, 20:35
Curly05 wrote:
:wink:

Let's subtract a 100 points from CEO's score and give it to me who needs the curve?

Why do you need a curve if you are so smart?

So, is it 72?

Kudos [?]: 29108 [0], given: 5267

Eternal Intern
Joined: 07 Jun 2003
Posts: 463

Kudos [?]: 169 [0], given: 0

Location: Lone Star State

### Show Tags

29 Jul 2003, 21:22
Yes, CEO, tell us the story over a few beers!

72, is right, but you ran out of time
_________________

Ride em cowboy

Kudos [?]: 169 [0], given: 0

SVP
Joined: 03 Feb 2003
Posts: 1603

Kudos [?]: 308 [0], given: 0

### Show Tags

29 Jul 2003, 21:48
from P to B = 3*4=12
from B to P = (4-1)*(3-1)=6

12*6=72

Kudos [?]: 308 [0], given: 0

Eternal Intern
Joined: 07 Jun 2003
Posts: 463

Kudos [?]: 169 [0], given: 0

Location: Lone Star State

### Show Tags

30 Jul 2003, 06:22
Multiplication Principle!

Masked in disguise, am i right?
_________________

Ride em cowboy

Kudos [?]: 169 [0], given: 0

SVP
Joined: 30 Oct 2003
Posts: 1788

Kudos [?]: 114 [0], given: 0

Location: NewJersey USA

### Show Tags

22 Jan 2004, 20:49
A different approach.

A <---------> B <-------------> C

One road from between A-B can be chosen in 3C1 ways
One road between B-C can be chosen in 4C1 ways
Since these two roads cannot be taken during return journey
One road between C-B can be chosen in 3C1 ways
One road between B-A can be chosen in 2C1 ways
So we have total ways = 3C1 * 4C1 * 3C1 * 2C1 = 3*4*3*2 = 72

Kudos [?]: 114 [0], given: 0

22 Jan 2004, 20:49
Display posts from previous: Sort by