Answer
(a) True
(b) True
Work Step by Step
P is a true statement while Q and R are false statements.
Then ~R is a true statement
(a) (P and Q)
This is a false statement since Q is a false statement
(P and Q) or ~R
This is a true statement since ~R is a true statement
(b) (P or Q)
This is a true statement since P is a true statement
(P or Q) and ~R
This is a true statement since both (P or Q) is a true statement and ~R is a true statement
