common ailment of senior citizens are arthritis, arteriosclerosis and loss of hearing. a survey of 200 senior citizens found out that 70 had arthritis, 60 had arteriosclerosis, 18 had loss of hearing, 35 had arthritis and arterioscleriosis, 33 had arthritis and loss of hearing 31 had arteriosclerosis and loss of hearing, and 15 had all three, how many of the senior citizens had, none of these ailments, arthritis but neither of the other two ailments, exactly one of these ailments, arteriosclerosis and loss of hearing but not arthritis, arteriosclerosis or loss of hearing but not arthritis, exactly two of these ailments​