Question 2. (2*5 = 10 points)

Consider the following input alphabet:

= {a, b}

Write regular expressions for each of the following strings:

a) Strings containing exactly two a

b) Strings containing at least two a

c) Strings containing at most two a

d) Strings ending with a

e) Strings starting and ending with the same symbol

Question 2. (2*5 = 10 points) Consider the following input alphabet: = {a, b} Write regular expressions for each of the following strings: a) Strings containing exactly two "a" b) Strings containing at least two "a Strings containing at most two "a" d) Strings ending with "a" e) Strings starting and ending with the same symbol