1. What is the regular expression of the language containing all the strings of a's and b's in which a string begins with an a and followed by a sequence of b's?

2. What is the regular expression describing the following language

L ={a,c,ab,cb,abb,cbb,abbb,cbbb,abbbb,cbbbb,}

defined over the alphabet = {a,b,c} ?

3. What is the regular expression describing the following language

L = {, bca, bcca, bcaa, bbccaa, }

defined over the alphabet = {a,b,c}?

4. What is the regular expression describing the following language

L = {, bca, bcca, bcaa, bbccaa, }

defined over the alphabet = {a,b,c}?

5. What is the regular expression describing the following language

L = {, ab, abb, abbb, } defined over the alphabet ={a,b}?