You have 10 boxes of chips. 9 boxes weigh 1g/chip, 1 box weighs 1.1g/chip. Minimum number of weighings to find the bad box?
Explanation: Take 1 chip from box 1, 2 from box 2, ..., 10 from box 10. Total chips = 55. If all were 1g, the weight would be 55g. If Box 4 is the defective one, the weight will be 55.4g. The decimal value points directly to the box number.
