Kelly, Lisa, Mark, and Ned are friends. One is a painter, another a doctor, another a lawyer, and another a salesperson. Each has a
hobby: their hobbies are tennis, jogging, poker, and gardening.
1) Lisa is the lawyer.
2) Mark is the doctor and his hobby is not gardening,
3) The painter's hobby is jogging.
4) Kelly's hobby is tennis.
Even if we did not know that Kelly's hobby is tennis, which of the
following statements could we deduce to be true?
1 Kelly is either the painter or the salesperson
2 Nancy's hobby is gardening
3 Mark's hobby is either poker or tennis