Math Is Crazy
Wednesday, February 3, 2016
Monk and the mystery
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300 monks live together in a monastery. They have very strict rules which are followed by all of the monks at all times. One of the rules i...
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Thursday, May 29, 2014
Cryptarithmetic
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This is a type of mathematical game consisting of a mathematical equation among unknown numbers , whose digits are represented by...
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Tuesday, May 27, 2014
Crocodile Dilemma Paradox
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If a crocodile steals a child and promises its return if the father can correctly guess exactly what the crocodile will do, how should the ...
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Thursday, April 24, 2014
Pirate Gold Problem
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There are 5 rational pirates, A, B, C, D and E. They find 100 gold coins. They must decide how to distribute them. The pirates have a st...
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Thursday, June 23, 2011
Ones and nines
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Show that all the divisors of any number of the form 19...9 (with an odd number of nines) end in 1 or 9. For example, the numbers 19, 1999...
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