22 reported relief from drug A 22 reported relief from drug B 31 reported relief from drug C 6 reported relief from both drugs A and B 15 reported relief from both drugs A and C 16 reported relief from both drugs B and C 42 reported relief from at least one of the drugs (a) How many people got relief from none of the drugs? x (b) How many people got relief from all three drugs? (d) How many subjects got relief from drugA only? x (Hint: See Example 9.3.7 and Exercise 9.3.33 with its solution in the "Read It" link.)