Which among the following is not an associative operation?...

MCQ

Which among the following is not an associative operation?

Union

Concatenation

Dot

None of the mentioned

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MCQ

Which of the following is correct?
Statement 1: ? represents a single string in the set.
Statement 2: ? represents the language that consist of no string.

Statement 1 and 2 both are correct

Statement 1 is false but 2 is correct

Statement 1 and 2 both are false

There is no difference between both the statements, ? and ? are different notation for same reason

Discussion

MCQ

Concatenation Operation refers to which of the following set operations:

Union

Dot

Kleene

Two of the options are correct

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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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MCQ

Let for ?= {0,1} R= (???) *, the language of R would be

{w | w is a string of odd length}

{w | w is a string of length multiple of 3}

{w | w is a string of length 3}

All of the mentioned

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MCQ

(a + b*c) most correctly represents:

(a +b) *c

(a)+((b)*.c)

(a + (b*)).c

a+ ((b*).c)

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