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 exer-cise, use alcohol only in mo deration, get 7 to 8 hours of sleep, maintain prop er 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 eats between meals and always exercises daily?

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 exer-cise, use alcohol only in mo deration, get 7 to 8 hours
of sleep, maintain prop er 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 eats between meals and always exercises daily?