Author 
Message 
TAGS:

Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 47184

If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the
[#permalink]
Show Tags
14 Mar 2017, 02:18
Question Stats:
61% (01:26) correct 39% (01:12) wrong based on 137 sessions
HideShow timer Statistics



Manager
Joined: 05 Apr 2014
Posts: 144
Location: India
Concentration: Economics, International Business
GPA: 3

A 5 can't be obtained. Coz max value of s allowed is 3 And to get 5 I need t to be (2)which is not possible
Posted from my mobile device



Manager
Joined: 08 Oct 2016
Posts: 207
Location: United States
Concentration: General Management, Finance
GPA: 2.9
WE: Engineering (Telecommunications)

Re: If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the
[#permalink]
Show Tags
16 Apr 2017, 06:23
BunuelPlease explain how to tackle such questions or mention any related topic TIA
_________________
Got Q42,V17 Target#01 Q45,V20April End



Math Expert
Joined: 02 Aug 2009
Posts: 6280

Re: If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the
[#permalink]
Show Tags
16 Apr 2017, 07:03
ehsan090 wrote: BunuelPlease explain how to tackle such questions or mention any related topic TIA Hi In such Qs where ranges are given and you are looking for a value... MANTRA or a helping point will be : As the variables can take any value within the range, more than often the extremes would B the answer that is A or E. So A.5 cannot be formed from 3( something slightly less than 2).. But E.6 can be found as min here will be infinity
_________________
1) Absolute modulus : http://gmatclub.com/forum/absolutemodulusabetterunderstanding210849.html#p1622372 2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html 3) effects of arithmetic operations : https://gmatclub.com/forum/effectsofarithmeticoperationsonfractions269413.html
GMAT online Tutor



EMPOWERgmat Instructor
Status: GMAT Assassin/CoFounder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 12014
Location: United States (CA)

Re: If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the
[#permalink]
Show Tags
17 Apr 2017, 11:26
Hi ehsan090, You can TEST VALUES to prove which 4 answers ARE possible (and which one is not). We're told that 3 ≥ S ≥ –3, and T > –2. We're asked which of the following CANNOT be the value of S – T.... IF.... S = 1, T = 0, then ST could be 1. Eliminate Answer B. S = 1/2, T = 0, then ST could be 1/2. Eliminate Answer C. S = 1/2, T = 0, then ST could be 1/2. Eliminate Answer D. S = 0, T = 6, then ST could be 6. Eliminate Answer E. There's only one answer remaining... Final Answer: GMAT assassins aren't born, they're made, Rich
_________________
760+: Learn What GMAT Assassins Do to Score at the Highest Levels Contact Rich at: Rich.C@empowergmat.com
Rich Cohen
CoFounder & GMAT Assassin
Special Offer: Save $75 + GMAT Club Tests Free
Official GMAT Exam Packs + 70 Pt. Improvement Guarantee www.empowergmat.com/
***********************Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!***********************



Manager
Joined: 08 Oct 2016
Posts: 207
Location: United States
Concentration: General Management, Finance
GPA: 2.9
WE: Engineering (Telecommunications)

Re: If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the
[#permalink]
Show Tags
17 Apr 2017, 21:50
EMPOWERgmatRichC wrote: Hi ehsan090, You can TEST VALUES to prove which 4 answers ARE possible (and which one is not). We're told that 3 ≥ S ≥ –3, and T > –2. We're asked which of the following CANNOT be the value of S – T.... IF.... S = 1, T = 0, then ST could be 1. Eliminate Answer B. S = 1/2, T = 0, then ST could be 1/2. Eliminate Answer C. S = 1/2, T = 0, then ST could be 1/2. Eliminate Answer D. S = 0, T = 6, then ST could be 6. Eliminate Answer E. There's only one answer remaining... Final Answer: GMAT assassins aren't born, they're made, Rich Thanks EMPOWERgmatRichCThis mean anyhow we must use putting values method to come to answer there is no other method exist am I right? Actually I feel it is a little time taken procedure and sometime resulted in panic for me when value are negative specially
_________________
Got Q42,V17 Target#01 Q45,V20April End



Manager
Joined: 02 Feb 2016
Posts: 89

Re: If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the
[#permalink]
Show Tags
12 May 2017, 00:18
Doesn't t>2 mean that it could take assume any value greater than 2? If that's the case, it could be +2 as well which would make the answer 5 possible.



Director
Joined: 13 Mar 2017
Posts: 610
Location: India
Concentration: General Management, Entrepreneurship
GPA: 3.8
WE: Engineering (Energy and Utilities)

Re: If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the
[#permalink]
Show Tags
12 May 2017, 00:44
Bunuel wrote: If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the value of s – t ?
A. 5 B. 1 C. 1/2 D. 1/2 E. –6 For t = 2, 1<=st<=5 For t=1, 2<=st<=4 and so on.. t can take any values and not only integral values. So we can see that st can attain any values <=5 if t>=2 If t>2, st<5.
_________________
CAT 99th percentiler : VA 97.27  DILR 96.84  QA 98.04  OA 98.95 UPSC Aspirants : Get my app UPSC Important News Reader from Play store.
MBA Social Network : WebMaggu
Appreciate by Clicking +1 Kudos ( Lets be more generous friends.) What I believe is : "Nothing is Impossible, Even Impossible says I'm Possible" : "Stay Hungry, Stay Foolish".



EMPOWERgmat Instructor
Status: GMAT Assassin/CoFounder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 12014
Location: United States (CA)

Re: If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the
[#permalink]
Show Tags
12 May 2017, 11:37
TheMastermind wrote: Doesn't t>2 mean that it could take assume any value greater than 2? If that's the case, it could be +2 as well which would make the answer 5 possible. Hi TheMastermind, You have to pay careful attention to the details of this question  and what it's ultimately asking for. The prompt asks us for what CANNOT be a possible value of (S  T), so proving that four of the answers ARE possible would leave us with the one that is not. You correctly note that T could be +2, so given the possible range of values for S, what COULD (ST) equal...? Any value from +1 to 5, inclusive. "5" is NOT in that range. GMAT assassins aren't born, they're made, Rich
_________________
760+: Learn What GMAT Assassins Do to Score at the Highest Levels Contact Rich at: Rich.C@empowergmat.com
Rich Cohen
CoFounder & GMAT Assassin
Special Offer: Save $75 + GMAT Club Tests Free
Official GMAT Exam Packs + 70 Pt. Improvement Guarantee www.empowergmat.com/
***********************Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!***********************




Re: If 3 ≥ s ≥ –3, and t > –2, then which of the following cannot be the &nbs
[#permalink]
12 May 2017, 11:37






