View the step-by-step solution to:


A Math professor has 11 colleagues in her (very large) office. Eight of them are English professors, and three are

Math professors. She would like to invite some of her colleagues to dinner. Find the number of choices if she decides to invite

a. At least 9 colleagues;

b. All the Math professors, and enough English professors to make the number of Math and English professors equal.

Top Answer

The best way to approach your question... View the full answer

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question