A California study concluded that following 7 simple health rules can extend a man’s life by 11
years on the average and a woman’s life by 7 years. These 7 rules are as follows: no smoking, get
regular exercise, use alcohol only in moderation, get 7 to 8 hours of sleep, maintain proper weight,
eat breakfast, and do not eat between meals. In how many ways can a person adopt 5 of these rules
to follow
(a) if the person presently violates all 7 rules?
(b) if the person never drinks and always eats breakfast?