Given: ∑= {a, b}L= {xϵ∑*|x is a string combination}∑4 represents which among the following?ans.{aaaa, abab, ε, abaa, aabb}{aaa, aab, aba, bbb}{aa, ab, ba, bb}All of the mentioned Previous Marked for Review Next
Question
Given: ∑= {a, b}L= {xϵ∑*|x is a string combination}∑4 represents which among the following?ans.{aaaa, abab, ε, abaa, aabb}{aaa, aab, aba, bbb}{aa, ab, ba, bb}All of the mentioned Previous Marked for Review Next
Solution
The symbol ∑4 represents the set of all strings that can be formed using the symbols in ∑, with a length of 4. Therefore, the correct answer is the set {aaaa, abab, abaa, aabb}. This set includes all possible combinations of 'a' and 'b' with a string length of 4. The other options include strings of different lengths, or the empty string ε, which are not included in ∑4.
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