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anonymous

  • 5 years ago

About Venn Diagrams and set notation. Does a "minus P" mean minus the overlap or all of "P"? Example Triple Venn of K, P and M. K has 15 people, 6 of which overlap with P. P has 7 people, 6 of which over lap with K. If M union K = 12, would MUK - P = 6 or 5?

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  1. Owlfred
    • 5 years ago
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    Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

  2. anonymous
    • 5 years ago
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    I don't see a good answer button.

  3. anonymous
    • 5 years ago
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    \[M \bigcup K \setminus P\] would be the set of everything that is in M and K but not in P.

  4. anonymous
    • 5 years ago
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    We can't know how many from P are in M union K without knowing more about M.

  5. anonymous
    • 5 years ago
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    I'll try to attach file

  6. anonymous
    • 5 years ago
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  7. amistre64
    • 5 years ago
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    hit f5 to refresh your browser and the good answer button should appear

  8. anonymous
    • 5 years ago
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    thanks

  9. amistre64
    • 5 years ago
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    -P tends to mean (notP)

  10. anonymous
    • 5 years ago
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    So it would be minus 7 in this Venn, not minus 6?

  11. amistre64
    • 5 years ago
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    notP = {1,3,8}

  12. amistre64
    • 5 years ago
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    subtract P from the union of MK right?

  13. anonymous
    • 5 years ago
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    yes

  14. anonymous
    • 5 years ago
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    Basically we can see that there is only 1 element that is in M AND K but not in P

  15. anonymous
    • 5 years ago
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    Ah, I see the numbers are not treated as numbers so to speak, but members of the set.

  16. amistre64
    • 5 years ago
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    Does it want MuK or MnK?

  17. anonymous
    • 5 years ago
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    No, I think it's the cardinality of the set.

  18. anonymous
    • 5 years ago
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    The question is show those with just M, just K or just M & K.

  19. anonymous
    • 5 years ago
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    Or I suppose you can interpret it as the elements.

  20. amistre64
    • 5 years ago
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    M union K is the set of all the elements of both M and K: MuK, MorK M intersect K is the set of only the common elements: MnK, MandK

  21. amistre64
    • 5 years ago
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    MuK - P = {8,1,3} MnK - P = {1}

  22. anonymous
    • 5 years ago
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    Elements - yes bc MUK is {8,1,3,2,4} P = {1,2,4} MUK - P would be {8, 1,3,2,4} - {1,2,4} (where the 1s are different elements) leaving {8,1,3}.

  23. anonymous
    • 5 years ago
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    Ack. Sorry union is or. not and

  24. amistre64
    • 5 years ago
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    exactly :)

  25. anonymous
    • 5 years ago
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    I need to get more sleep.

  26. amistre64
    • 5 years ago
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    and more fiber :)

  27. anonymous
    • 5 years ago
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    if by fiber you mean coffee I agree.

  28. anonymous
    • 5 years ago
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    Thank you your answer clarified this in a more important way than this single question. We have to relook at the set notation chapter.

  29. amistre64
    • 5 years ago
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    yw and good luck :)

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