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Question 11
The weights of 4 boxes are 20, 40, 50 and 30 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 = 20, 40, 50 and 30 kilograms
(A) : 140 = 20 + 30 + 40 + 50
(B) : 130 = not possible
(C) : 90 = 20 + 30 + 40
(D) : 120 =Â 30 + 40 + 50
=> Ans - (B)
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