Question

If ‘E’ is true, then what is the value of ‘A’, ‘I’ and ‘O’?

Answer 1

Answer:

Square of Opposition

The square of opposition is a chart that was introduced within classical (categorical) logic to represent the logical relationships holding between certain propositions in virtue of their form. The square, traditionally conceived, looks like this:

square-of-opposition

The four corners of this chart represent the four basic forms of propositions recognized in classical logic:

A propositions, or universal affirmatives take the form: All S are P.

E propositions, or universal negations take the form: No S are P.

I propositions, or particular affirmatives take the form: Some S are P.

O propositions, or particular negations take the form: Some S are not P.