Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Set Theory: subsets

  1. Sep 3, 2012 #1
    Hi there, heres the question im given, i will provide the answer that I think is correct, do you mind checking it and possibly pointing out where im wrong if I am?

    Give an example of a set S such that:
    a) S is a subset P(N)
    b) S belongs to P(N)
    c) S belongs to P(N) and |S|=5

    here are my answers:

    a) {1,2,3}
    b) {{1}}
    c) {1,2,3,4,5}
     
  2. jcsd
  3. Sep 4, 2012 #2

    chiro

    User Avatar
    Science Advisor

    Hey NecroWinter and welcome to the forums.

    Just to clarify what is the set P(N)? Is this just all the natural numbers or the power set of the entire set of natural numbers?
     
  4. Jan 18, 2013 #3
    You have the answers for A and B switched.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Set Theory: subsets
  1. Subsets and Power Set (Replies: 3)

  2. Set theory (Replies: 6)

  3. Empty set as a subset? (Replies: 12)

Loading...