Question 129

The weights of five boxes are 10, 30, 40, 70 & 70 kilograms. Which of the following cannot be the total weight (in kilograms) of any combination of these boxes?

Solution

For 190 kilograms = 70 + 70 + 40 + 10

For 180 kilograms = 70 + 70 + 40

For 210 kilograms = 70 + 70 + 40 + 30

We can not measure 200 by adding above weights.


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