Question 129

The weights of five boxes are 30, 40, 50, 70 & 90 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes?

Solution

Combination for 210 = 30, 40, 50, 90

Combination for 200 = 90, 70, 40

Combination for 190 = 90, 70, 30

There is no combination for 220 kilograms.


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