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Q.

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

A

L1 + L2

B

L1L2

C

L1

D

All of the mentioned

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MCQ

1.

If a

A

True

B

False

C

n>

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MCQ

2.

The set of all strings over ? = {a,b} in which strings consisting a

A

ab

B

a*bbb

C

(a+b)* bb

D

All of the mentioned

Discussion

MCQ

3.

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}

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MCQ

4.

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

A

{xy,xy}

B

{xx,xy,yx,yy}

C

{x,y}

D

{x,y,xy}

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MCQ

5.

For the following grammar: S ? A | B | 2 A ? C0 | D B ? C1 | E C ? D | E | 3 D ? E0 | S E ? D1 | S Identify all the unit pairs

A

D,C

B

A,B

C

B,C

D

A,C

Discussion

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