The following information was observed during a survey of 100 television viewers: 18 watch programme P only; 23 watch programme P but not Q; 8 watch programme P and R; 26 watch programme P; 48 watch programme R; 8 watch programme Q and R; 14 watch none of these programmes. Find the number of people who watch (i) Exactly two programmes (ii) Only one programme (iii) Only programme Q