Ask your own question, for FREE!
Mathematics 16 Online
OpenStudy (anonymous):

Does P (9,9) = 9!/9!-9! ?

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!