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1. |
The weights of 4 boxes are 70, 100, 20 and 40 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once. |
A. | 160 |
B. | 200 |
C. | 230 |
D. | 190 |
Answer» C. 230 | |