Answers

1. An alternative that best describes the language represented by the following regular expression is (A) strings do not have 2 consecutive 0s.

   What is a regular expression?

   • A regular expression (abbreviated regex or regexp; sometimes known as a rational expression) is a string of letters that indicates a search pattern in the text.
   • String-searching algorithms typically use such patterns for “find” or “find and replace” operations on strings, as well as input validation.
   • In theoretical computer science and formal language theory, regular expression techniques are developed.
   • As an example: Strings do not have two consecutive 0s, which is an alternative that best describes the language represented by the following regular expression (0∪ε)(1∪10).

   Therefore, an alternative that best describes the language represented by the following regular expression is (A) strings do not have 2 consecutive 0s.

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   The complete question is given below:

   What alternative best describes the language represented by the following regular expression?

   (0∪ε)(1∪10)

   Group of answer choices

   (A) Strings do not have 2 consecutive 0s.

   (B) Strings that only start with 1.

   (C) Strings do not have 2 consecutive 1s.

   (D) Strings that consist of alternating 0s and 1s.

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