这是OG11数学补充本的第160题。 我看了半天解释也不懂。请nn帮忙看看!多谢! (题目可能很弱智, nn们不要笑我)
1 | 2 | 3 | 4 | 5 | 6 | 7 |
-2 | -4 | -6 | -8 | -10 | -12 | -14 |
3 | 6 | 9 | 12 | 15 | 18 | 21 |
-4 | -8 | -12 | -16 | -20 | -24 | -28 |
5 | 10 | 15 | 20 | 25 | 30 | 35 |
-6 | -12 | -18 | -24 | -30 | -36 | -42 |
7 | 14 | 21 | 28 | 35 | 42 | 49 |
What is the sum of the integers in the table above?
A ) 28
B) 112
C) 336
D) 448
E) 784
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