The weights of 4 boxes are 100, 70, 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?
Weights of 4 boxes = 100, 70, 50 and 90 kilograms
(A) : 310 = 50 + 70 + 90 + 100
(B) : 260 = 70 + 90 + 100
(C) : 230 = not possible
(D) : 210 = 50 + 70 + 90
=> Ans - (C)
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