GMATPrep question

[rajesh_ctm]

Please help!

[gm800]

x + 4 = 1, so x = -3
y + 4 = -5 so y = -9
z + 4 = m (Remember this)

e + x = 7, since x = 3, e = 10
e + y = n, since y = -9, e = 10, n = 1

z + e = 10, since e = 10, z = 0.

remember z + 4 = m, so m = 4

So m + n = 4 + 1 = 5.

[rajesh_ctm]

I didn't know what is an addition table! I didn't see it in any book also. I had absolutely no clue on this one!
Scary!!! My exam is day after tomorrow!!!

Thanks for the great explanation!

[Cybermusings]

Hey great explanation!