Oct 15 12:00 PM PDT  01:00 PM PDT Join this live GMAT class with GMAT Ninja to learn to conquer your fears of long, kooky GMAT questions. Oct 16 08:00 PM PDT  09:00 PM PDT EMPOWERgmat is giving away the complete Official GMAT Exam Pack collection worth $100 with the 3 Month Pack ($299) Oct 19 07:00 AM PDT  09:00 AM PDT Does GMAT RC seem like an uphill battle? eGMAT is conducting a free webinar to help you learn reading strategies that can enable you to solve 700+ level RC questions with at least 90% accuracy in less than 10 days. Sat., Oct 19th at 7 am PDT Oct 20 07:00 AM PDT  09:00 AM PDT Get personalized insights on how to achieve your Target Quant Score.
Author 
Message 
TAGS:

Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58327

Of the 200 candidates who were interviewed for a position at a call
[#permalink]
Show Tags
14 Mar 2016, 08:13
Question Stats:
65% (02:26) correct 35% (02:50) wrong based on 182 sessions
HideShow timer Statistics
Of the 200 candidates who were interviewed for a position at a call center, 100 had a twowheeler, 70 had a credit card and 140 had a mobile phone. 40 of them had both, a twowheeler and a credit card, 30 had both, a credit card and a mobile phone and 60 had both, a two wheeler and mobile phone and 10 had all three. How many candidates had none of the three? A. 0 B. 10 C. 18 D. 20 E. 25
Official Answer and Stats are available only to registered users. Register/ Login.
_________________



Manager
Joined: 09 Jun 2015
Posts: 91

Re: Of the 200 candidates who were interviewed for a position at a call
[#permalink]
Show Tags
14 Mar 2016, 08:23
Bunuel wrote: Of the 200 candidates who were interviewed for a position at a call center, 100 had a twowheeler, 70 had a credit card and 140 had a mobile phone. 40 of them had both, a twowheeler and a credit card, 30 had both, a credit card and a mobile phone and 60 had both, a two wheeler and mobile phone and 10 had all three. How many candidates had none of the three?
A. 0 B. 10 C. 18 D. 20 E. 25 Apply the formula for n(AUBUC) You get 190. 200190 = 10



Intern
Joined: 13 Mar 2016
Posts: 25
Location: India
Concentration: General Management, Entrepreneurship
WE: General Management (Energy and Utilities)

Of the 200 candidates who were interviewed for a position.......
[#permalink]
Show Tags
05 Feb 2017, 06:32
Of the 200 candidates who were interviewed for a position at a call center, 100 had a twowheeler, 70 had a credit card and 140 had a mobile phone. 40 of them had both, a twowheeler and a credit card, 30 had both, a credit card and a mobile phone and 60 had both, a two wheeler and mobile phone and 10 had all three. How many candidates had none of the three? (1) 0 (2) 20 (3) 10 (4) 18 (5) 05



Math Expert
Joined: 02 Sep 2009
Posts: 58327

Re: Of the 200 candidates who were interviewed for a position at a call
[#permalink]
Show Tags
05 Feb 2017, 06:35
praveen27sinha wrote: Of the 200 candidates who were interviewed for a position at a call center, 100 had a twowheeler, 70 had a credit card and 140 had a mobile phone. 40 of them had both, a twowheeler and a credit card, 30 had both, a credit card and a mobile phone and 60 had both, a two wheeler and mobile phone and 10 had all three. How many candidates had none of the three? (1) 0 (2) 20 (3) 10 (4) 18 (5) 05 Merging topics. Please refer to the discussion above.
_________________



Current Student
Joined: 08 Feb 2016
Posts: 68
Location: India
Concentration: Technology
GPA: 4

Re: Of the 200 candidates who were interviewed for a position at a call
[#permalink]
Show Tags
05 Feb 2017, 22:02
Hi Bunuel, I got the correct answer by chance. I did not get the meaning of the question correctly and I seem to be dissatisfied by the approach I followed. Can you please point out mistake in my approach and/or suggest a better,more efficient way? total candidates = 200. So, A U B U C = 200. 100 = A ; 70= B; 140 = C. 40 = A n B (using n to denote intersection) 30 = B n C 60 = A n C 10 = A n B n C Using AUBUC = A + B + C  {A n B + B n C + C n A} + A n B n C I get 200 = 190. So I guess there is a gap of 10 somewhere. So let me go with 10. Bunuel wrote: praveen27sinha wrote: Of the 200 candidates who were interviewed for a position at a call center, 100 had a twowheeler, 70 had a credit card and 140 had a mobile phone. 40 of them had both, a twowheeler and a credit card, 30 had both, a credit card and a mobile phone and 60 had both, a two wheeler and mobile phone and 10 had all three. How many candidates had none of the three? (1) 0 (2) 20 (3) 10 (4) 18 (5) 05 Merging topics. Please refer to the discussion above.



Target Test Prep Representative
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2817

Re: Of the 200 candidates who were interviewed for a position at a call
[#permalink]
Show Tags
12 Mar 2018, 16:38
Bunuel wrote: Of the 200 candidates who were interviewed for a position at a call center, 100 had a twowheeler, 70 had a credit card and 140 had a mobile phone. 40 of them had both, a twowheeler and a credit card, 30 had both, a credit card and a mobile phone and 60 had both, a two wheeler and mobile phone and 10 had all three. How many candidates had none of the three?
A. 0 B. 10 C. 18 D. 20 E. 25 We can create the equation: Total = twowheeler + credit card + mobile phone  doubles + triple + neither 200 = 100 + 70 + 140  (40 + 30 + 60) + 10 + n 200 = 310  130 + 10 + n 200 = 190 + n 10 = n Answer: B
_________________
5star rated online GMAT quant self study course See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews
If you find one of my posts helpful, please take a moment to click on the "Kudos" button.



Intern
Joined: 19 Mar 2018
Posts: 1

Re: Of the 200 candidates who were interviewed for a position at a call
[#permalink]
Show Tags
30 Mar 2018, 07:00
Bunuel wrote: 40 of them had both, a twowheeler and a credit card, 30 had both, a credit card and a mobile phone and 60 had both, a two wheeler and mobile phone and 10 had all three. How many candidates had none of the three? Question: how do you realize when the statement is about exactly 2 overlapping sets, and when about at least two? I find it a bit difficult sometimes. Of course I'm not talking about obvious examples, but like the one here, I took it as "exactly", just to realize later that Formula 2 give result that it's not among the answers, so then I had to redo my math with the other formula. Any advice/ rule of thumb?



Board of Directors
Status: Stepping into my 10 years long dream
Joined: 18 Jul 2015
Posts: 3583

Re: Of the 200 candidates who were interviewed for a position at a call
[#permalink]
Show Tags
30 Mar 2018, 07:24
wengiel wrote: Question: how do you realize when the statement is about exactly 2 overlapping sets, and when about at least two? I find it a bit difficult sometimes. Of course I'm not talking about obvious examples, but like the one here, I took it as "exactly", just to realize later that Formula 2 give result that it's not among the answers, so then I had to redo my math with the other formula. Any advice/ rule of thumb? hey wengiel , Welcome to GMATClub Basically you are looking for this link. If you are not given exactly two, don't assume. More details in the link I shared.
_________________
My LinkedIn abhimahna.My GMAT Story: From V21 to V40My MBA Journey: My 10 years long MBA DreamMy Secret Hacks: Best way to use GMATClub  Importance of an Error Log!Verbal Resources: All SC Resources at one place  All CR Resources at one placeBlog: Subscribe to Question of the Day BlogGMAT Club Inbuilt Error Log Functionality  View More. New Visa Forum  Ask all your Visa Related Questions  here. New! Best Reply Functionality on GMAT Club!Find a bug in the new email templates and get rewarded with 2 weeks of GMATClub Tests for freeCheck our new About Us Page here.




Re: Of the 200 candidates who were interviewed for a position at a call
[#permalink]
30 Mar 2018, 07:24






