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Wednesday, April 22, 2009
100 random digits
100 digits are chosen at random. What is the probability to find two numbers, a and b, such that a^2=b and each digit is used just one time in forming the two numbers?
I like this puzzle since you must take into account the number of digits of a square number and the number of digits of 100. Then you need to consider these numbers together...
I like this puzzle since you must take into account the number of digits of a square number and the number of digits of 100. Then you need to consider these numbers together...
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