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Question 11
The weights of 4 boxes are 30, 20, 50 and 90 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?
Solution
Weights of 4 boxes = 30, 20, 50 and 90 kilograms
(A) : 200 = not possible
(B) : 190 = 20 + 30 + 50 + 90
(C) : 140 = 50 + 90
(D) : 160 = 20 + 50 + 90
=> Ans - (A)
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