Q. Which of the following is not a regular expression? (Solved)
1. [(a+b)*-(aa+bb)]*
2. [(0+1)-(0b+a1)*(a+b)]*
3. (01+11+10)*
4. (1+2+0)*(1+2)*
- b. [(0+1)-(0b+a1)*(a+b)]*
1. [(a+b)*-(aa+bb)]*
2. [(0+1)-(0b+a1)*(a+b)]*
3. (01+11+10)*
4. (1+2+0)*(1+2)*