What is the truth value of the following compound wff?

Question

(0 • 1) v 0

a.no truth value

b.1

c. this is unsolvable

d. 0

----------------------

((0 • 1) ⊃ (0 v (1 • 1)))  

a. 1

b. This is not solvable

c. 0

d. N

Assuming that A=1, Z=0 and P is unknown, what is the truth value of the following compound wff?  

((P ⊃ A) ⊃ Z)  

a. This is unsolvable

b. 1

c. N

d. 0

Answer 1

(0 and 1) or 0 =

0 or 0 = 0

so D

((0 and 1) --> (0 or (1 and 1)))=

( 0 --> (0 or 1)) =

( 0 --> 1) =1

so A

(P-->1) -->0

if P=0, then it is (0-->1) -->0 =

1 --> 0 = 0

if P=1, the it is (1-->1)-->0 =

1-->0 = 0

so either way the statement is false

so D

I've already done these for you...

why do you want to see them again