A step by step solution for each part of number 3 would be greatly appreciated.

Question

A step by step solution for each part of number 3 would be greatly appreciated.

Given sigma = {a, b}, write a regular definition for the following language: L(w) = {w | w ends in aa and contains the substring aba} Given sigma = {0, 1}, describe in English the languages denoted by the following regular expression: (0 + 1)*101(0 + 1)* Given sigma = {a, b, c}, write a regular expression for the set: "All strings of a's and b's and c's containing exactly two a's" Given sigma = {a, b}, write a regular expression for the set: "All strings of a's and b's beginning bb and not having three consecutive a's" Given sigma = {0, 1}, describe in English the languages denoted by the following regular express (0+1)*(00+01+11)+lambda+0+1

Explanation / Answer

Please find the below answers (upto 4 points):

1. (a+b)*aba*aa

2. L(w)={w| w contains substring 101 }

3. b*c*aab*c*

4. bb*(aba+bab)*

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