Forum Home > GMAT > Quantitative > Problem Solving (PS)
Events & Promotions
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Sep 1506:30 AM PDT
-07:30 AM PDT
Solve GRE practice problems covering Quant (One answer choice and multiple answer choice), Data Interpretation, Text Completion, Sentence Equivalence, and Reading Comprehension Problems.- Sep 15
07:30 AM PDT
-08:30 AM PDT
Solve 30 GMAT Focus practice problems covering Problem Solving, Data Sufficiency, Data Insights, Reading Comprehension, and Critical Reasoning. Take this GMAT practice quiz live with peers, analyze your GMAT study progress, and more. 
Sep 1201:30 PM IST
-11:30 PM IST
With brand new features like:AI-driven Planner tool, 850+ data Insights practice questions and GMAT Focus Edition Adaptive mock tests with ESR+ analysis and personal mentor support, our course is the most comprehensive course for GMAT Focus Edition.- Sep 16
08:30 AM PDT
-09:30 AM PDT
Are you stuck at a score and looking for effective score improvement strategies to achieve your target on GMAT? Meet Rajat, who improved his GMAT score by an incredible 70 points in just 12 days(and less than 50 hours of study) with GMATWhiz! - Sep 17
10:00 AM PDT
-11:00 AM PDT
In this video, Mayank Srivastava, Founder of Experts' Global, explains all the details about ISB PGP applications for 2024-25. 
Sep 2001:00 PM EDT
-02:00 PM EDT
Have you ever wondered how to score a PERFECT 805 on the GMAT? Meet Julia, a banking professional who used the Target Test Prep course to achieve this incredible feat. Julia's story is nothing short of an inspiration.- Sep 21
11:00 AM IST
-01:00 PM IST
Attend this session to learn how to Deconstruct arguments, Pre-Think Author’s Assumptions, and apply Negation Test. 
Sep 2210:00 AM EDT
-11:00 AM EDT
More and more TTP students are earning impressive scores on the GMAT. Now is the perfect time to join the many GMAT students who made the switch to TTP and surpassed their wildest expectations on test day.
What is the value of abcd+a+b+c+d ?
[#permalink]
25 Apr 2013, 05:31
25 Apr 2013, 05:31
5
Kudos
47
Bookmarks
Show timer
00:00
A
B
C
D
E
Difficulty:
35%
(medium)
Question Stats:
67% (01:26) correct
33%
(01:42)
wrong
based on 848
sessions
What is the value of abcd+a+b+c+d ?
(1) a^2 + b^2 + c^2 + d = 249
(2) d>= 249
(1) a^2 + b^2 + c^2 + d = 249
(2) d>= 249
Re: What is the value of abcd+a+b+c+d ?
[#permalink]
25 Apr 2013, 05:37
25 Apr 2013, 05:37
10
Kudos
4
Bookmarks
What is the value of abcd+a+b+c+d ?
(1) a^2 + b^2 + c^2 + d = 249
Clearly not sufficient, the combinations are endless
(2) d>= 249
Clearly no sufficient, no info about other terms
1+2) Now \(a^2 + b^2 + c^2 + d = 249\) and \(d\geq{249}\) remeber that a squared number cannot have a negative value, and its least value is 0.
With this the only combination that respect 1 and 2 is \(0+0+0+249=249\), if you (for example) say that d=250 than \(a^2 + b^2 + c^2\) must be nagative => impossible (at least it equals 0). so \(d=249\) \(a,b,c=0\) Sufficient
C
(1) a^2 + b^2 + c^2 + d = 249
Clearly not sufficient, the combinations are endless
(2) d>= 249
Clearly no sufficient, no info about other terms
1+2) Now \(a^2 + b^2 + c^2 + d = 249\) and \(d\geq{249}\) remeber that a squared number cannot have a negative value, and its least value is 0.
With this the only combination that respect 1 and 2 is \(0+0+0+249=249\), if you (for example) say that d=250 than \(a^2 + b^2 + c^2\) must be nagative => impossible (at least it equals 0). so \(d=249\) \(a,b,c=0\) Sufficient
C
General Discussion
Re: What is the value of abcd+a+b+c+d ?
[#permalink]
25 Apr 2013, 05:42
25 Apr 2013, 05:42
Zarrolou
What is the value of abcd+a+b+c+d ?
(1) a^2 + b^2 + c^2 + d = 249
Clearly not sufficient, the combinations are endless
(2) d>= 249
Clearly no sufficient, no info about other terms
1+2) Now \(a^2 + b^2 + c^2 + d = 249\) and \(d\geq{249}\) remeber that a squared number cannot have a negative value, and its least value is 0.
With this the only combination that respect 1 and 2 is \(0+0+0+249=249\), if you (for example) say that d=250 than \(a^2 + b^2 + c^2\) must be nagative => impossible (at least it equals 0). so \(d=249\) \(a,b,c=0\) Sufficient
C
(1) a^2 + b^2 + c^2 + d = 249
Clearly not sufficient, the combinations are endless
(2) d>= 249
Clearly no sufficient, no info about other terms
1+2) Now \(a^2 + b^2 + c^2 + d = 249\) and \(d\geq{249}\) remeber that a squared number cannot have a negative value, and its least value is 0.
With this the only combination that respect 1 and 2 is \(0+0+0+249=249\), if you (for example) say that d=250 than \(a^2 + b^2 + c^2\) must be nagative => impossible (at least it equals 0). so \(d=249\) \(a,b,c=0\) Sufficient
C
Of course ! Thank you!
The last four days instead of get better I get worst ! And I am going to take the exam in three days ! :O
