questões na imagem ajudem ai por favor
Anexos:
Soluções para a tarefa
Respondido por
1
Bom dia Luiz!
Solução!
Sendo os conjuntos!
![A)~~n(a)=7\\\\\
B)~~n(b)=8\\\\\
C)~~n(A\cap B)=\{3,12,24\}=4\\\\\
D)~~n(A \cup B)=\{1,2,3,4,6,8,9,12,15,18,21,24\}=12](https://tex.z-dn.net/?f=A%29%7E%7En%28a%29%3D7%5C%5C%5C%5C%5C%0AB%29%7E%7En%28b%29%3D8%5C%5C%5C%5C%5C%0AC%29%7E%7En%28A%5Ccap+B%29%3D%5C%7B3%2C12%2C24%5C%7D%3D4%5C%5C%5C%5C%5C%0AD%29%7E%7En%28A+%5Ccup+B%29%3D%5C%7B1%2C2%2C3%2C4%2C6%2C8%2C9%2C12%2C15%2C18%2C21%2C24%5C%7D%3D12 "A)~~n(a)=7\\\\\
B)~~n(b)=8\\\\\
C)~~n(A\cap B)=\{3,12,24\}=4\\\\\
D)~~n(A \cup B)=\{1,2,3,4,6,8,9,12,15,18,21,24\}=12")
-----------------------------------------------------------------------------------------------------------------
Exercicio 2
![n(P)=30\\\\
n(Q)=20\\\\\
n(P \cap Q)=10\\\\\\n(P\cup Q)=n(P)+n(Q)-n(P\cap Q)\\\\\\\
n(P\cup Q)=30+20-10\\\\\\\
n(P\cup Q)=50-10\\\\\\\
n(P\cup Q)=40](https://tex.z-dn.net/?f=n%28P%29%3D30%5C%5C%5C%5C%0An%28Q%29%3D20%5C%5C%5C%5C%5C%0An%28P+%5Ccap+Q%29%3D10%5C%5C%5C%5C%5C%5Cn%28P%5Ccup+Q%29%3Dn%28P%29%2Bn%28Q%29-n%28P%5Ccap+Q%29%5C%5C%5C%5C%5C%5C%5C%0An%28P%5Ccup+Q%29%3D30%2B20-10%5C%5C%5C%5C%5C%5C%5C%0An%28P%5Ccup+Q%29%3D50-10%5C%5C%5C%5C%5C%5C%5C%0An%28P%5Ccup+Q%29%3D40++ "n(P)=30\\\\
n(Q)=20\\\\\
n(P \cap Q)=10\\\\\\n(P\cup Q)=n(P)+n(Q)-n(P\cap Q)\\\\\\\
n(P\cup Q)=30+20-10\\\\\\\
n(P\cup Q)=50-10\\\\\\\
n(P\cup Q)=40")
----------------------------------------------------------------------------------------------------------------
Exercicio 3
![n(A)=20\\\\\
n(B)=?\\\\\\
(A\cap B)=12\\\\\
(A\cup B)=60\\\\\
n(A\cup B)=n(A)+n(B)-n(A\cap B)\\\\\\
60=20+n(B)-12\\\\\
60-20+12=n(B)\\\\\
40+12=n(B)\\\\\
52=n(B)\\\\\\
Resposta:Alternativa~~e](https://tex.z-dn.net/?f=n%28A%29%3D20%5C%5C%5C%5C%5C%0An%28B%29%3D%3F%5C%5C%5C%5C%5C%5C%0A%28A%5Ccap+B%29%3D12%5C%5C%5C%5C%5C%0A%28A%5Ccup+B%29%3D60%5C%5C%5C%5C%5C%0A%0An%28A%5Ccup+B%29%3Dn%28A%29%2Bn%28B%29-n%28A%5Ccap+B%29%5C%5C%5C%5C%5C%5C%0A60%3D20%2Bn%28B%29-12%5C%5C%5C%5C%5C%0A60-20%2B12%3Dn%28B%29%5C%5C%5C%5C%5C%0A40%2B12%3Dn%28B%29%5C%5C%5C%5C%5C%0A52%3Dn%28B%29%5C%5C%5C%5C%5C%5C%0AResposta%3AAlternativa%7E%7Ee "n(A)=20\\\\\
n(B)=?\\\\\\
(A\cap B)=12\\\\\
(A\cup B)=60\\\\\
n(A\cup B)=n(A)+n(B)-n(A\cap B)\\\\\\
60=20+n(B)-12\\\\\
60-20+12=n(B)\\\\\
40+12=n(B)\\\\\
52=n(B)\\\\\\
Resposta:Alternativa~~e")
Bom dia!
Bons estudos!
Solução!
Sendo os conjuntos!
-----------------------------------------------------------------------------------------------------------------
Exercicio 2
----------------------------------------------------------------------------------------------------------------
Exercicio 3
Bom dia!
Bons estudos!
luizinhoroludo:
muito obrigado
Perguntas interessantes