BTGmoderatorDC wrote:
W, X, Y and Z each represent a different number. If the sum of each column is shown beneath that column, and the sum of each row is shown beside that row, then n =
A) 6
B) 7
C) 8
D) 9
E) 10
Sum of all 4 rows = 3 + 6 + 9 + 0 =
18.
Sum of all 4 columns = -2 + 7 + n + 5 =
n + 10.
The values in blue must be EQUAL, since each represents the sum of all 16 values in the table.
Thus:
n+10 = 18
n=8.
The correct answer is
C.
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