Posted by **M** on Friday, April 20, 2012 at 12:13pm.

You have 27 tuning forks that oscillate at close but different frequencies. What are the (a) maximum and (b) minimum number of different beat frequencies you can produce by sounding the forks 2 at a time, depending on how the frequencies differ?

*I KNOW HOW TO DO B, I GOT THAT. BUT I DON'T KNOW HOW TO DO PART (A)*