Mathematics, 17.02.2020 22:00 tqjb2007

A set S of strings of characters is defined recursively by 1. a and b belong to S. 2. If x belongs to S, so does xb. Which of the following strings belong to S? a. a b. ab c. aba d. aaab e.

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A set S of strings of characters is defined recursively by 1. a and b belong to S. 2. If x belongs t...