Complete the reaction and find out `(p+q)=R+4`, the value of R is

If the statements p and q are true and the statement r and s are false, find the truth values of : (1) ~[(pvvq)^^~r]^^{[(~pvvq)vv(~r)]vvs} (2) p^^[q^^(~p^^r)vv~s]vv~r .

If p, q,r are the statements with truth values T, F, T respectively then find the truth value of (r^^q ) harr (~p)

If p,q,r be three distinct real numbers, then the value of (p+q)(q+r)(r+p), is

If p,q,r be three distinct real numbers, then the value of (p+q)(q+r)(r+p), is

In Figure , find out /_P X R , if P Q || R S .