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Concatenation Operation refers to which of the following set operations:

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Concatenation Operation refers to which of the following set operations:

(a) Union

(b) Dot

(c) Kleene

(d) Two of the options are correct

I had been asked this question during an online interview.

My query is from Regular Expression-Introduction in chapter Regular Expressions and Languages of Automata Theory

1 Answer

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Correct option is (b) Dot

Explanation: Two operands are said to be performing Concatenation operation AB = A•B = {xy: x ∈ A & y ∈ B}.

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