In a survey of 200 housewives, it was discovered that 8 had read magazine A, 100 had read magazine B and 96 had read magazine C. It was further discovered that 24 had read A and B, 36 had read B and C while 26 had read A and C. Find
(a) The number of housewives that had read all three magazines.
(b) The number of housewives that had read at least two magazines. The number of housewives that had read only one magazine.