Lossy compressors don't have the same constraints as a lossless compressor. If you data your input, compress it, and then decompress it, the output is not identical to the input. This allows the compressor to potentially compress the data far more than even the ideal lossless compressor hypothesized above.
The question mark (?), also known as the interrogation point, query, and eroteme, is a punctuation mark that indicates an interrogative clause, or phrase in many languages. The question mark is not used for indirect questions.
The term number sign is most commonly used when the symbol is used before a number. In the United States, it is sometimes known as the pound sign (particularly in the context of its use on telephone keypads), and has been traditionally used in the food industry as an abbreviation for pounds avoirdupois.utside of North America the symbol is called hash and the corresponding telephone key is called the hash key, and the term pound sign usually describes the British currency symbol Â£ .