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MCQ

Precedence of regular expression in decreasing order is

* , . , +

. , * , +

. , + , *

+ , a , *

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How many string of length less than 4 contains the language described by the regular expression(x+y)*y(a+ab)*?

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Which of the following pairs of regular expressions are equivalent?

1(01)* and (10)*1

x (xx)* and (xx)*x

x^+ and x^+ x^(*+)

All of the mentioned

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Which among the following is equivalent to the given regular expression?
01*+1

(01)*+1

0((1)*+1)

(0(1)*)+1

((0*1)1*)*

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Regular expression are

Type 0 language

Type 1 language

Type 2 language

Type 3 language

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Let L denotes the language generated by the grammar S

L = O

L is regular but not O

L is context free but not regular

L is not context free

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