Faculty of Degree Engineering - 083 Department of CE / IT – 07 / 16 Multiple Choice Questions Bank Theory of Computation 2160704
Faculty of Degree Engineering - 083 Department of CE / IT – 07 / 16 Multiple Choice Questions Bank Theory Of Computation 2160704 1 Let R1 and R2 be regular sets defined over alphabet ∑ then A R1 UNION R2 is regular B R1 INTERSECTION R2 is regular C ∑ INTERSECTION R2 IS NOT REGULAR D R2* IS NOT REGULAR Ans. R1 UNION R2 is regular 2 Consider the production of the grammar S->AA A->aa A->bb Describe the language specified by the production grammar. A L = {aaaa,aabb,bbaa,bbbb} B L = {abab,abaa,aaab,baaa} C L = {aaab,baba,bbaa,bbbb} D L = {aaaa,abab,bbaa,aaab} Ans. L = {aaaa,aabb,bbaa,bbbb} 3 Give a production grammar that specified language L = {ai b2i >= 1} A {S->aSbb,S->abb} B {S->aSb, S->b} C {S->aA,S->b,A->b} D None of the above Ans. {S->aSbb,S->abb} 4 Which of the following String can be obtained by the language L = {ai b2i / i >=1} A aaabbbbbb B aabbb C abbabbba D aaaabbbabb. Ans. aaabbbbbb 5 Give a production grammar for the language L = {x/x ∈ (a,b)*, the number of a’s in x is multiple of 3}. A {S->bS,S->b,S->aA,S->bA,A->aB,B->bB,B->aS,S->a} B {S->aS,S->bA,A->bB,B->bBa,B->bB} C {S->aaS,S->bbA,A->bB,B->ba} 1 Prepared By: Prof. Janvi P. Patel Prof. Bhoomi M. Bangoria Computer/IT Engineering Faculty of Degree Engineering - 083 Department of CE / IT – 07 / 16 Multiple Choice Questions Bank Theory Of Computation 2160704 D None of the above Ans.
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