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Regular expression (x/y)(x/y) denotes which of the following set?

{xy,xy}

{xx,xy,yx,yy}

{x,y}

{x,y,xy}

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How many minimum states are required to find whether a string has odd number of 0

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MCQ

Let L1 = {w ? {0,1}? | w has at least as many occurrences
of (110)



            
                                                            
                            
                            A
                            
                                L1 is regular but not L2                            
                        
                                            
                            
                            B
                            
                                L2 is regular                            
                        
                                            
                            
                            C
                            
                                L1 and L2 are regular                            
                        
                                            
                            
                            D
                            
                                Neither of them are regular                            
                        
                                                

            
                Correct Answer: A
                L1 is regular but not L2



        
            
            
                            
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                MCQ            
            
        

        
            
                3.
                You can use RE, if you expect the value of a property to change in an unpredictable way each time its run.
            

            
                                                            
                            
                            A
                            
                                True                            
                        
                                            
                            
                            B
                            
                                False                            
                        
                                            
                            
                            C
                            
                                n>   
 Explanation :                             
                        
                                            
                            
                            D
                            
                                div class="v-slide-group__next v-slide-group__next--disabled">
 Explanation :                             
                        
                                                

            
                Correct Answer: B



        
            
            
                            
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                4.
                NFA-?s are defined because certain properties can be more easily proved on them as compared to NFA.
            

            
                                                            
                            
                            A
                            
                                True                            
                        
                                            
                            
                            B
                            
                                False                            
                        
                                            
                            
                            C
                            
                                May be                            
                        
                                            
                            
                            D
                            
                                Can't say                            
                        
                                                

            
                Correct Answer: A
                
            
        

        
            
            
                            
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                5.
                Which of the following identity is true?
            

            
                                                            
                            
                            A
                            
                                ? + RR* = R* = ? + R*R                            
                        
                                            
                            
                            B
                            
                                (R1R2)*R1 = R1 (R2R1)*                            
                        
                                            
                            
                            C
                            
                                R*R* = R*                            
                        
                                            
                            
                            D
                            
                                All of the mentioned                            
                        
                                                

            
                Correct Answer: D
                
            
        

        
            
            
                            
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