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Q1.The weights of 4 boxes are 20 kg, 30 kg, 50 kg and 70 kg. If a combination of boxes is made using each box only once then the total weight of the combination cannot be:

Medium
A 170 kg
B 160 kg
C 150 kg
D None of these
Number Puzzles CSS 2026

Correct Answer: B

Checking all possible sums of the four box weights shows that 160 kg cannot be formed from any combination.