You start an indirect proof with the following supposition. What are you apparently trying to prove?

Question

You start an indirect proof with the following supposition. What are you apparently trying to prove?

Suppose there is an Athenian who is not Greek.

A. There is a Greek who is not Athenian.
B. All Athenians are Greek.
C. All Greeks are Athenians.
D. There is an Athenian who is not Greek.

Answer 1

Answer is B.

Answer 2

an indirect proof starts with the opposite conclusion and shows that it can't be.



so, B would be the answer.

Answer 3

B