lf p→(q∨r) is false, then the truth values of p, q and r are, respectively,

p→q is false only when p is true and q is false.Therefore, p→(q∨r) is false when p is true and q∨r is false.q∨r is false only when both q and r are false.Hence, truth values of p, q and r are, respectively, T, F and F.