Respostas

  • Usuário do Brainly
2013-06-26T23:37:55-03:00

Segundo o enunciado:

 

\text{A}=\{\text{a}, \text{b}, \text{c}\}

 

Considere o elemento \text{d}.

 

Desta maneira, \text{B}=\{\text{a}, \text{b}, \text{c}, \text{d}\}

 

Observe que, \text{P}(\text{A})=3 e \text{P}(\text{B})=4.

 

Logo, \dfrac{\text{P}(\text{B})}{\text{P}(\text{A})}=\dfrac{4}{3}

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