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Math Help - help with equivalence class

  1. #1
    Junior Member
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    help with equivalence class

    Find the equivalence class of {1,3,5}\{1,2}
    i know the answer is:
    {{3,5},{1,3,5},{2,3,5},{1,2,3,4}}
    but why??? why {1,3,5}
    why {2,3,5}
    and why {1,2,3,4}


    ???
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by tukilala View Post
    Find the equivalence class of {1,3,5}\{1,2}
    i know the answer is:
    {{3,5},{1,3,5},{2,3,5},{1,2,3,4}}
    but why??? why {1,3,5}
    why {2,3,5}
    and why {1,2,3,4}


    ???
    what does "\" mean here?
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