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Addition Table

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Addition Table

by k_suraj786 » Sat Apr 22, 2006 9:52 am
+ X Y Z
4 1 -5 M
E 7 N 10
F 2 -4 5

In the addition table shown above, what is the value of M + N =?

A. -19
B. 4
C. 5
D. 6
E. 22
:?
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by dkiran01 » Sat Apr 22, 2006 5:15 pm
is the answer "C"
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by beatthegmat » Sat Apr 22, 2006 8:32 pm
Can you show us how you got to that answer?
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by chix475ntu » Sun Apr 23, 2006 5:11 am
4+y=-5 ==> y = -9
4+z=m

e+y=n ==> e=n+9
e+z=10 ==> n+9+z=10 ==> n+z=1 ==> n+m-4=1
==> n+m=5

C
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by dkiran01 » Sun Apr 23, 2006 5:53 am
hey chix475ntu,

thanks for the explanation, was away with some busy work. So guys the answer is C :D
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by k_suraj786 » Sun Apr 23, 2006 7:54 am
Hey chix475ntu,

Thanks a lot.......for ur mentoring...

This website is really worth. God may bless u guys for spending time in solving such tricky problems.

:P
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thanks

by Hiran » Sat Apr 29, 2006 6:00 am
thanks..that info was useful..
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Wow

by tngearhart » Wed Jul 12, 2006 2:55 pm
I saw a couple of these on my practice tests and never had any idea how to work the problems. Thanks so much for the info. It's a huge relief to know how to do these problems!
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by naveen1003 » Thu Jun 09, 2011 2:19 am
+ X Y Z
4 1 -5 M
E 7 N 10
F 2 -4 5
In the addition table shown above, what is the value of M + N =?
A. -19
B. 4
C. 5
D. 6
E. 22
M=Z+4
N=Y+E
M+N = Z+Y+E+4 -equation 1
X+4 = 1; X=-3
Y+4=-5; Y=-9
X+E=7; E=10
Z+E=10; Z=0
thus M+N = 0+(-9)+10+4 = 5
IMO C
Last edited by naveen1003 on Thu Jun 09, 2011 3:20 am, edited 1 time in total.
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by [email protected] » Thu Jun 09, 2011 2:56 am
I did not get the above answer. Kindly explain the question plzzz....
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by casperkamal » Wed Jun 22, 2011 8:24 am
Just to help others from getting confused as I did, I have created an image of it to make it understandable.

Image

You can also look here for an alternate way...not so different but just for you to know

https://www.manhattangmat.com/forums/in- ... -t470.html
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by edvhou812 » Wed Jun 22, 2011 9:54 pm
Wish I could do this more quickly.

Basically found that E=12 so that E+z=10 becomes 12+z=10 so that z = -2
Y = -9 so that E+Y = n, N=3
eventually got to M = 4+z which is 4-2 = 2.
n+m = 3+2=5
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by abhicoolmax » Tue Aug 30, 2011 6:40 pm
I didn't know what the heck is an addition table and got it wrong. But after understanding what the heck is this addition table, I think the quickest solution could be:

m + n
= (e + y) + (z + 4)
= (e + y) + ((10 - e) + 4)
= 14 + y
= 14 + (-5 - 4)
= 5
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by ronnie1985 » Sat Feb 04, 2012 2:34 am
Please explain the logic of the addition table first
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