CS381-2004fa-prelim1 - CS381 Fall 2004 First Mid Term...

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CS381 First Mid Term Friday Oct 1, 2004 Fall 2004 Hollister B14 9:05-9:55 This is a 50-minute in class closed book exam. All questions are straightforward and you should have no trouble doing them. Please show all work and write legibly. Thank you. 1. Write a regular expression denoting all strings in which every third symbol is a 0. Some strings in the set are ε , 010, 1101101, 0001101001, etc 2. Express the set { } 12 0 10 10
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