坑：I just realized one room number is not available 公布答案及来源

in our hospital. 

Background： Each floor's room number starts from 01 to 80 and every room number is 3 digits starting with the floor number.

 For example, the room numbers on the 4th floor would be from 401 to 480. 

The missing room number is above the 3rd floor.

Can you guess what room number is missing？

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The answer is： 666

 

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From wiki：

Number of the beast[edit]

In the Textus Receptus manuscripts of the New Testament, the Book of Revelation (13:17–18) cryptically asserts 666 to be "the man's number" or "the number of a man" (depending on how the text is translated) associated with the Beast, an antagonistic creature that appears briefly about two-thirds into the apocalyptic vision. Some manuscripts^[which?] of the original Koine Greek use the symbols χξ? chi xi stigma (or χξ? with a digamma), while other manuscripts spell out the number in words.^[16]

In modern popular culture, 666 has become one of the most widely recognized symbols for the Antichrist or, alternatively, the devil. Earnest references to the number occur both among apocalypticist Christian groups and in explicitly anti-Christian subcultures. References in contemporary Western art or literature are, more likely than not, intentional references to the Beast symbolism. Such popular references are therefore too numerous to list.

It is common to see the symbolic role of the integer 666 transferred to the numerical digit sequence 6-6-6. Some people take the Satanic associations of 666 so seriously that they actively avoid things related to 666 or the digits 6-6-6. This is known as hexakosioihexekontahexaphobia.