GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 19 Sep 2018, 00:17

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

Jane needs to walk 3 blocks south and 3 blocks east. What is the proba

Author Message
TAGS:

Hide Tags

Manager
Joined: 11 Feb 2011
Posts: 120
Jane needs to walk 3 blocks south and 3 blocks east. What is the proba  [#permalink]

Show Tags

18 Jul 2011, 02:06
1
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 5 sessions

HideShow timer Statistics

Jane needs to walk 3 blocks south and 3 blocks east. What is the probability that she will walk south for the first 2 blocks?

OA:1/5
Retired Moderator
Joined: 20 Dec 2010
Posts: 1869
Re: Jane needs to walk 3 blocks south and 3 blocks east. What is the proba  [#permalink]

Show Tags

18 Jul 2011, 02:35
AnkitK wrote:
Jane needs to walk 3 blocks south and 3 blocks east. What is the probability that she will walk south for the first 2 blocks?

OA:1/5

EEESSS

Total Paths= C(6,3)= 20

Now, we need to fix SS for the first two positions:

SS****

**** are EEES, which can be arranged in 4!/3! ways i.e. 4 ways.

Probability = 4/20=1/5
_________________
Non-Human User
Joined: 09 Sep 2013
Posts: 8071
Re: Jane needs to walk 3 blocks south and 3 blocks east. What is the proba  [#permalink]

Show Tags

03 Oct 2017, 07:49
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: Jane needs to walk 3 blocks south and 3 blocks east. What is the proba &nbs [#permalink] 03 Oct 2017, 07:49
Display posts from previous: Sort by

Events & Promotions

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.