Let L = L1 ? L2, where L1 and L2 are languages as defined be...

MCQ

Let L = L1 ? L2, where L1 and L2 are languages as defined below:
L1 = {ambmcanbn | m, n >= 0 }

L2 = {aibjck | i, j, k >= 0 }

Then L is

Not recursive

Regular

Context free but not regular

None of the mentioned

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MCQ

Let L = L1 ? L2, where L1 and L2 are languages as defined below:
L1 = {ambmcanbn | m, n >= 0 }

L2 = {aibjck | i, j, k >= 0 }

Then L is

Not recursive

Regular

Context free but not regular

None of the mentioned

Discussion

MCQ

If L1 and L2 are regular languages is/are also regular language(s).

L1 + L2

L1L2

All of the mentioned

Discussion

MCQ

If is a language, and is a symbol, then, the quotient of and, is the set of strings such that is in: is in. Suppose is regular, which of the following statements is true?

L/a is always a regular language

L/a is not a regular language

Both of the mentioned

None of the mentioned

Discussion

MCQ

Regular expressions can be used only for values of type string and number.

True

False

Discussion

MCQ

Which of the following are regular sets?
I. { a^n b^2m | n>=0, m>=0}

II. {a^n b^m |n=2m}

III. {a^n b^m | n!= m}

IV {xcy |x,y



            
                                                            
                            
                            A
                            
                                I and IV                            
                        
                                            
                            
                            B
                            
                                I and III                            
                        
                                            
                            
                            C
                            
                                I and only                            
                        
                                            
                            
                            D
                            
                                IV                            
                        
                                                

            
                Correct Answer: A



        
            
            
                            
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