Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 14 Sep 2014, 18:06

### 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

# this one is yet more tricky and yet more freaky. Find all

Author Message
TAGS:
SVP
Joined: 03 Feb 2003
Posts: 1613
Followers: 6

Kudos [?]: 46 [0], given: 0

this one is yet more tricky and yet more freaky. Find all [#permalink]  18 Jun 2003, 23:10
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
this one is yet more tricky and yet more freaky.
Find all its solutions.

(|2*Z|)!–|Z|=Z
SVP
Joined: 03 Feb 2003
Posts: 1613
Followers: 6

Kudos [?]: 46 [0], given: 0

now it is correct.
it is imperative that you sovle the question, not simply guess it.

Manager
Joined: 24 Jun 2003
Posts: 147
Location: India
Followers: 1

Kudos [?]: 1 [0], given: 0

PS: FACTORIAL2 [#permalink]  26 Jun 2003, 05:45
The LHS equation always gives positive values. Therefore, solution cannot lie in Z<0

Now for Z>=0, the equation can be rewritten as

(2Z)!-Z=Z

which gives (2Z-1)!=1 which is only possible for
(2Z-1) = 0 or 1. This leads to values of Z as 1 or 1/2
PS: FACTORIAL2   [#permalink] 26 Jun 2003, 05:45
Similar topics Replies Last post
Similar
Topics:
3 One student at the school was not yet 15, yet he was 2 20 Aug 2013, 05:49
Malaria ravages more people than any disease, yet there are 4 17 Jan 2008, 00:14
Malaria ravages more people than any disease, yet there are 9 09 Sep 2007, 08:03
3 more tricky Math Questions 7 03 Mar 2007, 16:06
Cornell R3 - Any one interviewed yet? 91 27 Jan 2007, 18:28
Display posts from previous: Sort by