turkey-yks 2017 Q30

turkey-yks · Other · lys1-math Proof True/False Justification
For propositions $p$, $q$, and $r$ $$( p \Rightarrow q ) \Rightarrow r$$ it is known that the proposition is false.
Accordingly,\ I. $p \Rightarrow q$\ II. $q \Rightarrow r$\ III. $r \Rightarrow p$\ Which of the following propositions are always true?\ A) Only I\ B) Only II\ C) Only III\ D) I and III\ E) II and III
For propositions $p$, $q$, and $r$
$$( p \Rightarrow q ) \Rightarrow r$$
it is known that the proposition is false.

Accordingly,\
I. $p \Rightarrow q$\
II. $q \Rightarrow r$\
III. $r \Rightarrow p$\
Which of the following propositions are always true?\
A) Only I\
B) Only II\
C) Only III\
D) I and III\
E) II and III