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Regular Expressions Questions

MCQ
1.
The grammar defined by regular expressions is known as?
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MCQ
2.
The language defined by regular grammar is known as?
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MCQ
3.
Union of two languages L and M is written as?
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MCQ
4.
Concatenation (.) has the ________ highest precedence
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MCQ
5.
Which of them are not left associative ?
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MCQ
6.
The RE in which any number of 0?s is followed by any number of 1?s followed by any number of 2?s is?
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MCQ
7.
Which of the following is NOT the set of regular expression R = (ab + abb)* bbab?
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MCQ
8.
Consider the production of the grammar S->AA A->aa A->bb Describe the language specified by the production grammar.
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MCQ
9.
If R is regular language and Q is any language (regular/ non regular), then Pref (Q in R) is _____________
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MCQ
10.
The non terminal that gives null will said to have a null production
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