Change this invalid argument into a valid argument. all students are brilliant,she is brilliant,so she is a student.

Error: Incorrect
Reversal.

All students are brillants can be translated
into: If you are a student, then you are brillant. There is an error consisting in
reversing the two terms of the syllogism without negating
them.

Correct Reversal should read: If you are not
brillant, then you are not a student: the two terms must be reversed and then negated in
order to reach a valid conclusion.

All students are
brillant: in other words, if you belong to the category of students then you also belong
to the large category of brillant people.

However, there
are some people belonging to the category of "brillant" personnes who are note students;
therefore the correct statement should be:All students are brillant; she is a brillant
person but she may not be a student.

All students are
brillant