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

It is currently 22 Nov 2019, 12:57

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

In the addition table shown above, what is the value of m+n

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Manager
Manager
User avatar
Status: Starting Work
Affiliations: Chartered Engineer
Joined: 20 Jun 2010
Posts: 191
Location: United Arab Emirates
Concentration: General Management, Leadership
Schools: INSEAD - Class of 2013
WE: Business Development (Energy and Utilities)
In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 03 Nov 2010, 21:27
6
30
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

80% (02:14) correct 20% (02:23) wrong based on 824 sessions

HideShow timer Statistics

+xyz
41-5m
e7n10
f2-45

In the addition table shown above, what is the value of m + n =?

A. -19
B. 4
C. 5
D. 6
E. 22
Most Helpful Expert Reply
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 59266
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 03 Nov 2010, 23:09
19
11
+xyz
41-5m
e7n10
f2-45

In the addition table shown above, what is the value of m + n =?
A. -19
B. 4
C. 5
D. 6
E. 22

The sum of some value from the first row and and some value from the first column is given in the intersection box of these values.

So:

x+4=1 --> x=-3;
y+4=-5 --> y=-9;
x+e=-3+e=7 --> e=10;
y+e=-9+10=n --> n=1;
z+e=z+10=10 --> z=0;
z+4=0+4=m --> m=4;

\(m+n=4+1=5\).

Answer: C.
_________________
General Discussion
Veritas Prep GMAT Instructor
User avatar
V
Joined: 16 Oct 2010
Posts: 9803
Location: Pune, India
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 09 Nov 2010, 08:05
8
2
Sarang wrote:
Question:- will this get completed in a time span of 2 mins?


It will.

+ x y z
4 1 -5 m
e 7 n 10
f 2 -4 5

Take an aggressive approach. First find out what you want to know: m + n
m = 4 + z and n = e + y so you need 4 + z + e + y

Now, y is simple. 4 + y = -5 so y = -9
e and z are trickier. Looking at the 2nd column, if I have x, I can find e.
x is simple. 4 + x = 1 so x = -3
Now, e + x = 7 which means e -3 = 7 so e = 10
Only z remains. e + z = 10 so 10 + z = 10 giving me z = 0
I have all I needed. 4 + z + e + y = 4 + 0 + 10 -9 = 5
_________________
Karishma
Veritas Prep GMAT Instructor

Learn more about how Veritas Prep can help you achieve a great GMAT score by checking out their GMAT Prep Options >
Intern
Intern
avatar
Joined: 09 Dec 2010
Posts: 2
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 30 Jan 2011, 11:17
1
the simplest way to do this is through a series of successive substitutions.
whenever there's a () in the working below, it means i have substituted a value that i found in an earlier step.

cheers.

x + 4 = 1
therefore, x = -3

y + 4 = -5
therefore, y = -9

x + e = 7
(-3) + e = 7
therefore, e = 10

y + e = n
(-9) + (10) = n
therefore, n = 1 ...(i)

z + e = 10
z + (10) = 10
therefore, z = 0

z + 4 = m
(0) + 4 = m
therefore, m = 4 ...(ii)

using (i) and (ii), m + n = 5

Ans = 5
Manager
Manager
avatar
Joined: 27 Oct 2010
Posts: 93
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 01 Feb 2011, 20:42
1
4 + z = m
e + y = n
e + z = 10
4 + y = -5
4 + z + e + y = m + n
m + n = 10 - 5 = 5
Director
Director
avatar
Joined: 01 Feb 2011
Posts: 533
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 08 Mar 2011, 22:23
3
On careful observation , this problem can be easily solved under 2 mins.

m +n = 4 +z + e +y = 4 +(z+e)+y = 4 +10+y = 14+y

solve y separately, y = -9 => m+n = 14-9 =5.

Answer is C.

Sarang wrote:
Question:- will this get completed in a time span of 2 mins?
Senior Manager
Senior Manager
User avatar
S
Status: No dream is too large, no dreamer is too small
Joined: 14 Jul 2010
Posts: 416
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 31 Jul 2011, 11:14
Bunuel wrote:
+xyz
41-5m
e7n10
f2-45

In the addition table shown above, what is the value of m + n =?
A. -19
B. 4
C. 5
D. 6
E. 22

The sum of some value from the first row and and some value from the first column is given in the intersection box of these values.

So:

x+4=1 --> x=-3;
y+4=-5 --> y=-9;
x+e=-3+e=7 --> e=10;
y+e=-9+10=n --> n=1;
z+e=z+10=10 --> z=0;
z+4=0+4=m --> m=4;

\(m+n=4+1=5\).


How will I know that The sum of some value from the first row and and some value from the first column is given in the intersection box of these values. What is the mechanism?
_________________
Veritas Prep GMAT Instructor
User avatar
V
Joined: 16 Oct 2010
Posts: 9803
Location: Pune, India
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 01 Aug 2011, 02:14
Baten80 wrote:
Bunuel wrote:
+xyz
41-5m
e7n10
f2-45

In the addition table shown above, what is the value of m + n =?
A. -19
B. 4
C. 5
D. 6
E. 22

The sum of some value from the first row and and some value from the first column is given in the intersection box of these values.

So:

x+4=1 --> x=-3;
y+4=-5 --> y=-9;
x+e=-3+e=7 --> e=10;
y+e=-9+10=n --> n=1;
z+e=z+10=10 --> z=0;
z+4=0+4=m --> m=4;

\(m+n=4+1=5\).

Answer: C.


How will I know that The sum of some value from the first row and and some value from the first column is given in the intersection box of these values. What is the mechanism?


If you are not aware of the concept of 'addition table', the mechanism isn't intuitive. It might take some time to figure out. On the bright side, you now know the mechanism behind an addition table and if some other such concept does crop up in your actual GMAT, they will explain you how to arrive at the values. Very rarely will you see ambiguity in actual GMAT questions (If it does arise, they are quick to fix it.) So just know what this concept is and move on.
_________________
Karishma
Veritas Prep GMAT Instructor

Learn more about how Veritas Prep can help you achieve a great GMAT score by checking out their GMAT Prep Options >
Manager
Manager
avatar
Joined: 12 Oct 2011
Posts: 152
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 22 Jan 2012, 23:28
1
This one is quite easy actually. I, frankly, do not think that this is 700-level. But then again, it is just my opinion.

Here is my explanation:

Question: m + n = ?

Now m = z + 4; n = y + e

Hence, m + n = z + 4 + y + e = (z + e) + (y + 4)

If you observe the table again, you know that (z + e) = 10 and (y + 4) = -5.

Add them to get m + n = 5

Answer: C
_________________
Consider KUDOS if you feel the effort's worth it
Intern
Intern
avatar
Joined: 21 Jun 2011
Posts: 4
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 26 Apr 2012, 19:24
Q # 2 on my GMAT Prep test # 1... :roll: spent 5 minutes trying to figure it out and still couldn't. Now I am worrying more than ever about such ridiculous questions....
Veritas Prep GMAT Instructor
User avatar
V
Joined: 16 Oct 2010
Posts: 9803
Location: Pune, India
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 26 Apr 2012, 23:44
1
mk0991 wrote:
Q # 2 on my GMAT Prep test # 1... :roll: spent 5 minutes trying to figure it out and still couldn't. Now I am worrying more than ever about such ridiculous questions....


You don't have to worry. If this question was a part of GMAT at some time, it was a very very long time back. GMAT has been evolving and now if they use a term such as 'addition table', they are not going to assume that you know what it is. They will explain you what an addition table is i.e. they will tell you something like this" "An addition table is where numbers in the first row get added to numbers in the first column to give the results given in the grid e.g. 4 + X = 1, E + Y = N etc."
The stats related to every question are monitored and if they see inconsistencies, they filter them out e.g. if they see people getting more than Q49 but sitting on this 500 - 600 level question for 5 mins, they will figure out why and take action. In GMAT, the intent of the question will be very clear. You will only have to worry about 'how to get the answer' not 'what do they want'.
_________________
Karishma
Veritas Prep GMAT Instructor

Learn more about how Veritas Prep can help you achieve a great GMAT score by checking out their GMAT Prep Options >
Senior Manager
Senior Manager
User avatar
Joined: 27 Jun 2012
Posts: 348
Concentration: Strategy, Finance
Schools: Haas EWMBA '17
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 15 Jan 2013, 02:50
2
Attachment:
addition table.jpg
addition table.jpg [ 20.45 KiB | Viewed 36805 times ]

We do not have to calculate value of any variable here. The solution can be simplified as below:
m=z+4 and n=y+e
Hence m+n = z+4+y+e = (y+4) + (z+e)
From yellow cell (y+4) = -5
From green cell (z+e) = 10

Substitute above in (m+n) equation
m+n = (y+4)+(z+e) = -5+10= 5

Hence choice(C) is the answer.
_________________
Thanks,
Prashant Ponde

Tough 700+ Level RCs: Passage1 | Passage2 | Passage3 | Passage4 | Passage5 | Passage6 | Passage7
Reading Comprehension notes: Click here
VOTE GMAT Practice Tests: Vote Here
PowerScore CR Bible - Official Guide 13 Questions Set Mapped: Click here
Finance your Student loan through SoFi and get $100 referral bonus : Click here
CEO
CEO
User avatar
D
Status: GMATINSIGHT Tutor
Joined: 08 Jul 2010
Posts: 2977
Location: India
GMAT: INSIGHT
Schools: Darden '21
WE: Education (Education)
Reviews Badge
Re: In the addition table shown above, what is the value of m+n  [#permalink]

Show Tags

New post 13 Nov 2016, 06:41
mattapraveen wrote:
+xyz
41-5m
e7n10
f2-45

In the addition table shown above, what is the value of m + n =?

A. -19
B. 4
C. 5
D. 6
E. 22



Answer: option C

Check solution as attached
Attachments

File comment: www.GMATinsight.com
13.jpg
13.jpg [ 57.38 KiB | Viewed 2681 times ]


_________________
Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

ACCESS FREE GMAT TESTS HERE:22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION
Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 13632
Re: What is the value of m+n? Refer to the addition table below,  [#permalink]

Show Tags

New post 08 Oct 2019, 03:00
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.
_________________
GMAT Club Bot
Re: What is the value of m+n? Refer to the addition table below,   [#permalink] 08 Oct 2019, 03:00
Display posts from previous: Sort by

In the addition table shown above, what is the value of m+n

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne