1. Not finding help here? Sign up for a free 30min 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!

Wording in a Permutation/Combination Problem

  1. Aug 9, 2005 #1
    Hello all,

    I came across a question regarding permutations that I found a bit confusing. Please tell me what you think it means

    "Choose 4 numbers from 0-9 to comprise a 4-digit code.

    1) If number cannot be the same, how many codes can we have"

    The way I see it, it means that the digits in the codes cannot be repeated. So basically, the possible codes cannot be 2223; all the digits must be different. Is this what you think too?

    Thanks
     
  2. jcsd
  3. Aug 10, 2005 #2

    honestrosewater

    User Avatar
    Gold Member

    I can't imagine what "if number cannot be the same" means, but I think permutation is a reasonable guess. If this is for a class, you can always just explain to the teacher that you didn't understand the question. :smile:
     
  4. Aug 10, 2005 #3
    It means, "if no two numbers can be the same."
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Wording in a Permutation/Combination Problem
Loading...