Discussion
Given productions S goes to AB, A goes to a or epsilon and B goes to b, FIRST(S) is
Answer: D
S begins with A, which contributes a. Because A can also derive epsilon, FIRST of B contributes b as well. Epsilon is not included since S itself cannot derive the empty string. Tracking when epsilon propagates is the part most often got wrong by hand.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development