Pulsified333
  • Pulsified333
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Pulsified333
  • Pulsified333
i think i found two answers so far
Pulsified333
  • Pulsified333
@dan815
dan815
  • dan815
okay which ones u want help with right now

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More answers

Pulsified333
  • Pulsified333
Everything basically
Pulsified333
  • Pulsified333
actually maybe just A' and B' . I may be able to figure it out from there
dan815
  • dan815
|dw:1443068270473:dw|
Pulsified333
  • Pulsified333
B does not equal 77 though
Pulsified333
  • Pulsified333
https://gyazo.com/03d2c5fb2796a49ee5d683e8e8d917c6
dan815
  • dan815
|dw:1443068444096:dw|
dan815
  • dan815
i wouldnt trust all that addition lol i just did it all in my head so -,- prolly made some mistakes
Pulsified333
  • Pulsified333
I know that A U B has to equal 203
Pulsified333
  • Pulsified333
but B doesn't equal 77
dan815
  • dan815
why
Pulsified333
  • Pulsified333
did you see the picture
Pulsified333
  • Pulsified333
the website says its wrong
Pulsified333
  • Pulsified333
I don't understand how it isn't 77
dan815
  • dan815
they made a mistake just try 87 for B
Pulsified333
  • Pulsified333
what about A?
dan815
  • dan815
flip it 77 for A and 87 for B
dan815
  • dan815
the guy who made the test prolly put the wrong answers
Pulsified333
  • Pulsified333
77 doesn't work for A either
dan815
  • dan815
ohh lmao all of A oops
Pulsified333
  • Pulsified333
could A and B be disjoint?
dan815
  • dan815
77+39 obviously
dan815
  • dan815
why did we even get 77 from
dan815
  • dan815
i mean 87+39 for A and 77+39 for B
Pulsified333
  • Pulsified333
oh
Pulsified333
  • Pulsified333
now only two left https://gyazo.com/04f300cc9a4d47126c41d750837b2361
dan815
  • dan815
a interset b not is 87
dan815
  • dan815
and the other is 77
Pulsified333
  • Pulsified333
is n(A∩B′)= |dw:1443069216495:dw|?
Pulsified333
  • Pulsified333
so everything not in B?
dan815
  • dan815
B' means everything not in B
dan815
  • dan815
what part of everything not in B is in A?
dan815
  • dan815
|dw:1443069320930:dw|
dan815
  • dan815
|dw:1443069372800:dw|
Pulsified333
  • Pulsified333
39 is in A
dan815
  • dan815
87 indicates the part that is only in A
dan815
  • dan815
did you try 87
dan815
  • dan815
was it wrong ?
Pulsified333
  • Pulsified333
sorry thats what I meant
Pulsified333
  • Pulsified333
so n(A∩B′)= 87 n(A′∩B)= 77
dan815
  • dan815
ya
Pulsified333
  • Pulsified333
:D thank you dude so much :D
dan815
  • dan815
sure baby

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