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MCQ

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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If P, Q, R are three regular expressions and if P does not contain a then the equation R = R + RP has a unique solution given by

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Regular expression {0,1} is equivalent to

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Regular expression (x/y)(x/y) denotes the set

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Regular expressions are closed under

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