Lista de exercícios do ensino médio para impressão
(CESCEM - 1977) Sendo $\;A\,=\,\lbrace\,\varnothing;\,a;\,\lbrace\,b\,\rbrace\, \rbrace\;$, com $\,\lbrace\,b\,\rbrace\,\neq\,a\,\neq\,b\,\neq\varnothing\,$, então:
a)
$\,\lbrace\,\varnothing,\,\lbrace\,b\,\rbrace\,\rbrace\,\subset\,A\;$
b)
$\,\lbrace\,\varnothing,\,b\,\rbrace\,\subset\,A\;$
c)
$\,\lbrace\,\varnothing,\,\lbrace\,a\,\rbrace\,\rbrace\,\subset\,A\;$
d)
$\,\lbrace\,a,\,b\,\rbrace\,\subset\,A\;$
e)
$\,\lbrace\,\lbrace\,a\,\rbrace,\,\lbrace\,b\,\rbrace\,\rbrace\,\subset\,A\;$

 



resposta: (A)
×
Name:
Comment:


lista de exercícios em pdf disponíveis:
mais...