Give a regular expression for each of the following sets of bit strings.

4. Give a regular expression for each of the following sets of bit strings. a) Zero or more 1s, ending with 01 b) Every 1 is followed by two or more Os c) Ending in 00 and not containing 11 d) Containing exactly one 1 e) Containing an even number of 1s f) Containing an odd number of bits