Answer
b) , c) and e) should also be true.
Work Step by Step
Let us take two statements p and q.
p : X is boiling.
q : temperature of X is atleast 150deg
p → q is true as according to the question.
a) q → p is false.
b) ~q → ~p is true (inverse of p → q ).
c) ~q → ~p is true (inverse of p → q ).
d) ~p → ~q is false.
e) ~q → ~p is true (inverse of p → q ).
f) q → p is false.
