How many miles of road are there in the US
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How would you design an universal remote control?
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How would you design a clock for a blind person?
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How would you design a toaster?
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You have a bucket of jelly beans. Some are red, some are blue, and some green. With your eyes closed, pick out 2 of a like color. How many do you have to grab to be sure you have 2 of the same?
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Imagine you are standing in front of a mirror, facing it. Raise your left hand. Raise your right hand. Look at your reflection. When you raise your left hand your reflection raises what appears to be his right hand. But when you tilt your head up, your reflection does too, and does not appear to tilt his/her head down. Why is it that the mirror appears to reverse left and right, but not up and down?
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How would you locate a book in a big library if there is no cataloging system and no librarian to help you?
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How many points are there on the globe where by walking one mile south, one mile east and one mile north you reach the place where you started.
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You are an employer. You have ten employees. Each month, each one of your ten employees gives you ten bags of gold. Each bag of gold has ten pieces of gold in it. Each piece of gold weighs one pound. One of your employees is cheating you by only putting nine pieces of gold in each of his ten bags of gold. You have a scale (not a balance, a scale), and you can only take one measurement from the scale, only one (1) reading.
How can you tell which of the ten employees is cheating you by using this scale and only taking one measurement?
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“You have b boxes and n dollars. If I want any amount of money from 0 to n dollars, you must be able to hand me 0 to b boxes so that I get exactly what I request.” The two questions were “What are the restrictions on b and n, and how is money distributed among the boxes?”
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