GMAT prep Question...plz help

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gmat_dest: Master | Next Rank: 500 Posts; Posts: 186; Joined: Fri Jan 16, 2009 4:57 am; Thanked: 7 times; GMAT Score:720

by gmat_dest » Tue Apr 28, 2009 10:40 am

3) What is m+n?

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

Source: Beat The GMAT — Problem Solving | Tue Apr 28, 2009 10:40 am

lilu: Master | Next Rank: 500 Posts; Posts: 148; Joined: Wed Dec 10, 2008 5:13 pm; Location: SF, CA; Thanked: 12 times

by lilu » Tue Apr 28, 2009 10:46 am

The more you look, the more you see.

deepoe: Master | Next Rank: 500 Posts; Posts: 151; Joined: Wed Feb 11, 2009 2:45 am; Thanked: 3 times

by deepoe » Thu Apr 30, 2009 12:41 am

Table:

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

Table when filled in with the numbers

+ -3 -9 0
4 1 -5 4 (M)
10 7 1 (N) 10
5 2 -4 5

4+1 = 5

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