1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: #8 b)

  1. Jul 6, 2014 #1


    User Avatar

    1. The problem statement, all variables and given/known data

    Problem#8 b) is attached as a photo

    2. Relevant equations

    3. The attempt at a solution
    B) n^2-n=90. C)nP5=14(nP4)
    N^2-n-90=0. N!/(n-5)=14(n!/n-4)
    Last edited by a moderator: Jul 6, 2014
  2. jcsd
  3. Jul 6, 2014 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Rather than give us in image (upside down at that), please type the question here as per the forum rules.
  4. Jul 6, 2014 #3
    Yes, please do that in a new thread.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook