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How many trailing zeros are there in n factorial?
http://linkmingle.com/details/1080
created by interview_questions on 2008-06-14 11:55:30
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How many times a day a clock’s hands overlap with out counting next day's midnight starting from today's midnight.
http://linkmingle.com/details/982
created by interview_questions on 2008-06-14 02:58:40
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There are three people who want to know the average of their salary. How can they get the average without disclosing their salary to each other?
http://linkmingle.com/details/985
created by interview_questions on 2008-06-12 00:32:53
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A shopkeeper has a beam balance and requires to weigh any article of a whole number of grams from 1 to N inclusive. What is the least number of weights necessary to do this?
http://linkmingle.com/details/852
created by interview_questions on 2008-06-04 09:30:17
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A group of aeroplanes is based on a small island. The tank of each plane holds just enough fuel to take it half-way around the world. Any desired amount of fuel may be transferred from the tank of one plane to the tank of another whilst the planes are in flight. The only source of fuel is on the island, and for the purposes of this problem it is assumed that there is no time lost in refuelling either in the air or on the ground.
What is the smallest number of planes that will ensure the flight, non-stop, of one plane around the world on a great circle assuming that each of the planes has the same constant ground speed and rate of fuel consumption, and that all planes return safely to their island base?
http://linkmingle.com/details/810
created by interview_questions on 2008-05-30 06:45:10
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Two boats start at the same instant from opposite sides of a river, traveling across the water on routes at right angles to the shores. Each travels at a constant speed, but one is faster than the other. They pass at a point 720 yards from the nearest shore. both boats remain in their slips for 20 minutes before starting back. On the return trips they meet 400 yards from the other shore.
How wide is the river?
http://linkmingle.com/details/809
created by interview_questions on 2008-05-30 01:46:07
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A hard puzzle to figure out a strategy to save 23 Good prisoners
http://linkmingle.com/details/739
created by interview_questions on 2008-05-23 13:20:17
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you are presented with three doors (door 1, door 2, door 3). one door has a million dollars behind it. the other two have goats behind them. you do not know ahead of time what is behind any of the doors.
monty asks you to choose a door. you pick one of the doors and announce it. Monty then shows you one of the doors with a goat behind it and asks you if you would like to keep the door you chose, or switch to the other unknown door.
should you switch? if so, why? what is the probability if you don't switch? what is the probability if you do.
http://linkmingle.com/details/725
created by interview_questions on 2008-05-22 04:28:44
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There are 13 red,15 green and 17 blue chameleons in an island. Each time two different colored chameleons meets they would change their color to the third color. (ie. If red meets green, they both change their color to blue.). Is it ever possible for all chamaleons to have the same color?
http://linkmingle.com/details/663
created by interview_questions on 2008-05-15 10:35:37
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