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Pulsified333

  • one year ago

Suppose that A and B are sets with n(A′)=431,n(B′)=441,n((A∪B)′)=354, and n(U)=557. Find the following: n(A)= n(B)= n(A∪B)= 203 n(A∩B)= n(A∩B′)= n(A′∩B)= n(A′∩B′)= 354

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  1. Pulsified333
    • one year ago
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    i think i found two answers so far

  2. Pulsified333
    • one year ago
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    @dan815

  3. dan815
    • one year ago
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    okay which ones u want help with right now

  4. Pulsified333
    • one year ago
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    Everything basically

  5. Pulsified333
    • one year ago
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    actually maybe just A' and B' . I may be able to figure it out from there

  6. dan815
    • one year ago
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    |dw:1443068270473:dw|

  7. Pulsified333
    • one year ago
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    B does not equal 77 though

  8. Pulsified333
    • one year ago
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    https://gyazo.com/03d2c5fb2796a49ee5d683e8e8d917c6

  9. dan815
    • one year ago
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    |dw:1443068444096:dw|

  10. dan815
    • one year ago
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    i wouldnt trust all that addition lol i just did it all in my head so -,- prolly made some mistakes

  11. Pulsified333
    • one year ago
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    I know that A U B has to equal 203

  12. Pulsified333
    • one year ago
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    but B doesn't equal 77

  13. dan815
    • one year ago
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    why

  14. Pulsified333
    • one year ago
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    did you see the picture

  15. Pulsified333
    • one year ago
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    the website says its wrong

  16. Pulsified333
    • one year ago
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    I don't understand how it isn't 77

  17. dan815
    • one year ago
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    they made a mistake just try 87 for B

  18. Pulsified333
    • one year ago
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    what about A?

  19. dan815
    • one year ago
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    flip it 77 for A and 87 for B

  20. dan815
    • one year ago
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    the guy who made the test prolly put the wrong answers

  21. Pulsified333
    • one year ago
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    77 doesn't work for A either

  22. dan815
    • one year ago
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    ohh lmao all of A oops

  23. Pulsified333
    • one year ago
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    could A and B be disjoint?

  24. dan815
    • one year ago
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    77+39 obviously

  25. dan815
    • one year ago
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    why did we even get 77 from

  26. dan815
    • one year ago
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    i mean 87+39 for A and 77+39 for B

  27. Pulsified333
    • one year ago
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    oh

  28. Pulsified333
    • one year ago
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    now only two left https://gyazo.com/04f300cc9a4d47126c41d750837b2361

  29. dan815
    • one year ago
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    a interset b not is 87

  30. dan815
    • one year ago
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    and the other is 77

  31. Pulsified333
    • one year ago
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    is n(A∩B′)= |dw:1443069216495:dw|?

  32. Pulsified333
    • one year ago
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    so everything not in B?

  33. dan815
    • one year ago
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    B' means everything not in B

  34. dan815
    • one year ago
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    what part of everything not in B is in A?

  35. dan815
    • one year ago
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    |dw:1443069320930:dw|

  36. dan815
    • one year ago
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    |dw:1443069372800:dw|

  37. Pulsified333
    • one year ago
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    39 is in A

  38. dan815
    • one year ago
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    87 indicates the part that is only in A

  39. dan815
    • one year ago
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    did you try 87

  40. dan815
    • one year ago
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    was it wrong ?

  41. Pulsified333
    • one year ago
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    sorry thats what I meant

  42. Pulsified333
    • one year ago
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    so n(A∩B′)= 87 n(A′∩B)= 77

  43. dan815
    • one year ago
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    ya

  44. Pulsified333
    • one year ago
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    :D thank you dude so much :D

  45. dan815
    • one year ago
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    sure baby

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