Examine the following relationships among members of a family of $6$ persons $A, B, C, D, E,$ and $F$.
$1.$ The number of males equals that of females.
$2.$ $A$ and $E$ are sons of $F$.
$3.$ $D$ is the mother of two,one boy and one girl.
$4.$ $B$ is the son of $A$.
$5.$ There is only one married couple in the family at present.
Which one of the following inferences can be drawn from the above?
$1.$ The number of males equals that of females.
$2.$ $A$ and $E$ are sons of $F$.
$3.$ $D$ is the mother of two,one boy and one girl.
$4.$ $B$ is the son of $A$.
$5.$ There is only one married couple in the family at present.
Which one of the following inferences can be drawn from the above?
- A$A, B$ and $C$ are all females.
- B$A$ is the husband of $D$.
- C$E$ and $F$ are the children of $D$.
- D$D$ is the granddaughter of $F$.
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