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陈向东代数题75题求解
Are there exactly 3 distinct symbols used to create the code words in language Q?
1.The set of all code words in language Q is the set of all possible distinct horizontal arrangement of one or more symbols,with no repetition.
2.There are exactly 15 code words in language Q.
答案为C。说实话，我压根理解不了。。。。 |
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