Question: Construct a regular expression defining each of the following languages over the alphabet = { a b } : a) All strings that do not

Construct a regular expression defining each of the following languages over the alphabet Construct a regular expression defining each of the following languages over the = { a b } :

a) All strings that do not end in a double letter.

b) All words that contain at least one of the strings alphabet = { a b } : a) All strings that do, not end in a double letter. b) All words that contain at, least one of the strings , , , or . c) All, or strings that end in a double letter. .

c) All strings that end in a double letter.

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