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Quick Probability Q

  • 13-06-2010 1:15pm
    #1
    DB10
    Site Banned Posts: 2,719 ✭✭✭


    Anyone have any tips how to remember when to use the P button and when to use the C button on the calculator?

    I always mix them up...


Comments

  • #2
    ajjmk
    Registered Users, Registered Users 2 Posts: 338 ✭✭ajjmk


    DB10 wrote: »
    Anyone have any tips how to remember when to use the P button and when to use the C button on the calculator?

    I always mix them up...

    hi5, im just trying to figure that out too! i think its nPr for arrangements, when the order is important, & its nCr for conbinations when the order doesnt matter.. :D



    im a retard, im just after copping! P for Premutations (another word for arrangements) & C for Combinations!:D


  • #3
    EuropeanSon
    Registered Users, Registered Users 2 Posts: 2,819 ✭✭✭EuropeanSon


    The only one I ever use is nCr. I just multiply or use factorials for the others.


  • #4
    Liveit
    Registered Users, Registered Users 2 Posts: 264 ✭✭Liveit


    question here aswell
    AND means multiply
    OR means add
    is that right?


  • #5
    ajjmk
    Registered Users, Registered Users 2 Posts: 338 ✭✭ajjmk


    Liveit wrote: »
    question here aswell
    AND means multiply
    OR means add
    is that right?

    yupyup :D


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