Question

Assume the statement " if P, then Q." is true.
Based on this assumption , which of the following must be true ?
A. if Q , then P.
B. If P , then not Q.
C.If not P , then not Q.
D. if not Q , then not P.

Answer 1

A

Answer 2

A is true

Answer 3

not at all

Answer 4

a statement is equivalent to its "contra-positive"
the contra-positive of "if P then Q" is "if not Q, then not P"

Answer 5

yeah...what satellite said. And nice name btw.

Answer 6

Really ?! thank you sooooo much! & thanks ;* @hackYou