how old is my sister?
question: when i was 4 my sister was half my age. now i am 100. how old is my sister now?
answer: most people will say fifty. the answer is 98.
question: when is 99 more than 100?
answer: a microwave.generally when you run a microwave for '99' it runs for 1 minute and 39 seconds. '100' runs for 1 minute.
question: you have a glass of water that looks about half full. how can you tell, only using the glass of water itself, if the glass is half full or not?
the glass is a right cylinder.
answer: tip the glass of water until the water reaches the rim of the 