Something you know nobody knows, and everyone knows something you don't. We all know something, nobody knows everything, and you know something someone doesn't know. What else could nobody know?
There are 10 bags full of coins out of which one bag is full of fake coins which we don’t know. But you do know that genuine coins weigh 01 gram, but fake weighs 1.1 grams. We have to identify that bag in minimum readings a digital weighing machine.
Everyone knows that both Christmas Day and New year's Day always fall on the same day of the week. However, in 1939 the year of the outbreak of World War II, Christmas fell on a Monday and New Year's fell on a Sunday. Why?
