Online Compiler for any Programing Language

Online Compiler


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Why do Japanese Fear Number 4 ?

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  Tetraphobia    is a   fear   of the number   4 . It is a   superstition   found most often in   East Asian  areas like   China ,   Japan ,   Korea , and   Taiwan . An elevator in Shanghai – floor numbers 4, 13 and 14 are missing The Chinese word for  four  (四, pinyin: sì, jyutping: sei), sounds very similar to the word for  death  (死, pinyin: sǐ, jyutping: sei). Chinese people take care not use the number 4 during important holidays, or if someone in the family is sick. Numbers such as 14, 24, and so on, are not used because they also have the number 4 in them. Buildings sometimes do not have floors with these numbers, apartments and hotels do not have rooms with number 4, 14, 24 and so on. Table number 4, 14, 24, may be often left out in wedding dinners or other social activities in ...
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Stunning Fact About Playing Cards ?

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It Starts with a Simple Deck of Playing Cards They seem harmless enough, 52 thin slices of laminated cardboard with colorful designs printed on their sides. Yet, as another illustration of the mantra that complexity begins from the most simple systems, the number of variations that these 52 cards can produce is virtually endless. The richness of most playing card games owes itself to this fact. Permute this! The number of possible permutations of 52 cards is 52!. I think the exclamation mark was chosen as the symbol for the factorial operator to highlight the fact that this function produces surprisingly large numbers in a very short time. If you have an old school pocket calculator, the kind that maxes out at 99,999,999, an attempt to calculate the factorial of any number greater than 11 results only in the none too helpful value of "Error". So if 12! will break a typical calculator, how large is 52!? 52! is the number of different ways you can arrange a sin...
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