Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > Let L be the language on A = {a,b,c} which co...
Start Learning for Free
Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression 'r' such that L = L(r)?
1. r = a∗b∗c∗
2. r = aa∗bb∗cc∗
3. r = aa∗b∗cc∗
4. r = aa∗b∗c∗
Correct answer is '2'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Let L be the language on A = {a,b,c} which consists of all words of fo...
Statement 1:
If L = {w = arbsct ∣ r,s,t ≥ 0}
Then L(r) = a∗b∗c∗
Statement 2:
If L = {w = arbsct ∣ r, s, t > 0}
Then L(r) = aa∗bb∗cc
DFA for Language L:
Statement 3:
If L = {w = arbsct ∣ s ≥ 0 and r, t > 0}
Then L(r) = aa∗b∗cc∗
Statement 4:
If L = {w = arbsct ∣ s,t ≥ 0 and r > 0}
Then L(r) = aa∗b∗c∗
Hence, the correct answer is 2.
Free Test
FREE
| Start Free Test |
Community Answer
Let L be the language on A = {a,b,c} which consists of all words of fo...
Explanation:
Regular Expression Analysis:
- The regular expression r = aa*bb*cc* represents the language L as it allows for any combination of 'a', 'b', and 'c' with at least one occurrence of each within the word.
- The '*' symbol allows for zero or more occurrences of the preceding character.
- Therefore, the regular expression matches words of the form arbsct where r, s, t > 0.
Explanation of Incorrect Answers:
1. r = a*b*c*
- This regular expression allows for words with any combination of 'a', 'b', and 'c', including words that do not contain all three characters.
- It does not enforce the condition that each character 'a', 'b', and 'c' must occur at least once in the word.
3. r = aa*bc*
- This regular expression does not cover all possible combinations of 'a', 'b', and 'c' in the word.
- It does not ensure that the word contains at least one 'b' and one 'c'.
4. r = aa*bc*
- Similar to the third option, this regular expression does not guarantee the presence of all three characters 'a', 'b', and 'c' in the word.
- It fails to meet the requirement that each character must occur at least once in the word.
Therefore, the correct regular expression for the language L is r = aa*bb*cc*.
Regular Expression Analysis:
- The regular expression r = aa*bb*cc* represents the language L as it allows for any combination of 'a', 'b', and 'c' with at least one occurrence of each within the word.
- The '*' symbol allows for zero or more occurrences of the preceding character.
- Therefore, the regular expression matches words of the form arbsct where r, s, t > 0.
Explanation of Incorrect Answers:
1. r = a*b*c*
- This regular expression allows for words with any combination of 'a', 'b', and 'c', including words that do not contain all three characters.
- It does not enforce the condition that each character 'a', 'b', and 'c' must occur at least once in the word.
3. r = aa*bc*
- This regular expression does not cover all possible combinations of 'a', 'b', and 'c' in the word.
- It does not ensure that the word contains at least one 'b' and one 'c'.
4. r = aa*bc*
- Similar to the third option, this regular expression does not guarantee the presence of all three characters 'a', 'b', and 'c' in the word.
- It fails to meet the requirement that each character must occur at least once in the word.
Therefore, the correct regular expression for the language L is r = aa*bb*cc*.
Attention Computer Science Engineering (CSE) Students!
To make sure you are not studying endlessly, EduRev has designed Computer Science Engineering (CSE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Computer Science Engineering (CSE).
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Similar Computer Science Engineering (CSE) Doubts
Top Courses for Computer Science Engineering (CSE)View all
Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer?
Question Description
Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer?.
Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer?.
Solutions for Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE).
Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free.
Here you can find the meaning of Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer?, a detailed solution for Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer? has been provided alongside types of Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Let L be the language on A = {a,b,c} which consists of all words of form w = arbsct where r, s, t > 0. Which of the following is valid regular expression r such that L = L(r)?1. r = a∗b∗c∗2. r = aa∗bb∗cc∗3. r = aa∗b∗cc∗4.r = aa∗b∗c∗Correct answer is '2'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.
|
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup