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Fun, engaging games to boost memory, math fluency, typing speed, and English skillsβperfect for learners of all ages.
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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does reversing a string mean?
π‘ Hint: Think about the order of the characters.
Question 2
Easy
If L = { ab, a }, what is LR?
π‘ Hint: Remember to reverse each string in L.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is LR if L = { ab, aba }?
- { ba
- aba }
- { ba
- aba
- aab }
- { ab }
π‘ Hint: Apply the reversal definition to all elements.
Question 2
True or False: The reversal of a language is always a regular language.
- True
- False
π‘ Hint: Consider the properties of regular languages.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Prove that if L is a regular language, then LR is also regular by constructing a DFA for LR from the DFA of L.
π‘ Hint: Sketch the original DFA and visualize its reversed structure.
Question 2
Given L = { a^n b^n | n >= 0 }, discuss how the reversal LR would change the nature of the strings.
π‘ Hint: Notice the balance of symbols while reversing.
Challenge and get performance evaluation