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 issue

  1. Jul 18, 2011 #1
    in a coaching centre of 70 but 4 students went on a university visit.31 went to unilag,35 went to lasu and 36 went to u.i. 10 went to all the three universities, 12 went to unilag only, 13 also went to lasu only, 15 went to u.i only. how many students visited

    1 . . unilag and lasu

    2 . .at least 2 universities

    3 . . exactly 2 universities

    4 . .u.i or unilag but not lasu
     
  2. jcsd
  3. Jul 18, 2011 #2
    draw the typical sketch of 3 circles where all 3 intersect in the middle and around you have 2-circle intersection areas....start populating the areas according to the description of the problem
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Set theory issue
  1. Set Theory (Replies: 1)

  2. Set theory question (Replies: 7)

  3. Set Theory? (Replies: 2)

Loading...