What are the answers to part c ?

h webassign.net C Calculator.java Atlantis Day Passes Buffalo Chick..Wings Recipe Crabcake recipe HTML Lists Find Textbook..n University Timeless. Min..CO Jewellery A study was done to determine the efficacy of three different drugs-A, B, and C-in relieving headache pain. Over the period covered by the study, 50 subjects were given the chance to use all three drugs. The following results were obtained: 22 reported relief from drug A 22 reported relief from drug B 30 reported relief from drug C 7 reported relief from both drugs A and B 14 reported relief from both drugs A and C 15 reported relief from both drugs B and C 42 reported relief from at least one of the drugs. Note that some of the 22 subjects who reported relief from drug A may also have reported relief from drugs B or C. A similar occurrence may be true for the other data. (a) How many people got relief from none of the drugs? 8 (b) How many people got relief from all three drugs? (c) Let A be the set of all subjects who got relief from drug A, B the set of all subjects who got relief from drug B, and C the set of all subjects who got relief from drug C. Fill in the numbers for all eight regions of the following diagram. Sample of Students A B