Question

which of the following sets are not well defined? explain. a. the set of tall lawyers b. the set of nice poems c. the set of whole numbers greater than 175 d. the set of subsets of {a,b,c,d} e. the set {x | x > x + 2 and x ∈ n} a. which of the following describes the set of tall lawyers? a. it is not well defined. there is no clear meaning of \tall.\ b. it is not well defined. although there is a clear meaning of \lawyers,\ it is not possible to tell whether a person is a lawyer. c. it is well defined. it is possible to list all of the tall lawyers in the world. d. it is not well defined. there is no clear meaning of \lawyers.\ e. it is well defined. for a given lawyer, it is possible to tell whether he or she is tall. f. it is well defined. for a given person, it is possible to tell whether he or she is a lawyer.

Explanation:

A well - defined set has a clear rule to determine membership. For "tall lawyers", "tall" is subjective (no clear height threshold), so the set isn't well - defined. Option A says it's not well - defined due to unclear "tall", which matches.

Answer:

A. It is not well defined. There is no clear meaning of "tall."