Multiple choice

Which of the following languages is regular?

  1. $\left\\{ww^R \mid w \in \{0, 1\}^+\right\\}$
  2. $\left\\{ww^Rx \mid x,w \in \{0, 1\}^+\right\\}$
  3. $\left\\{wxw^R \mid x, w \in \{0, 1\}^+\right\\}$
  4. $\left\{xww^R \mid x, w \in \{0, 1\}^+\right\}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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