Need math help with the Faculty Appreciation Day

Need math help with the Faculty Appreciation Day

For Faculty Appreciation Day, the faculty club lunch room staff asked each faculty member to leave a business card in a container. At the end of lunch a card would be drawn, and that faculty member would be given free lunches for a week. Eighty-eight faculty left a card, including 7 mathematics faculty, 12 history faculty, and 3 chemistry faculty. Find the probability that the card drawn was for the following. (Round your answers to three decimal places.)

a) a mathematics faculty member

(b) a chemistry faculty member

(c) a history faculty member

(d) a mathematics or chemistry faculty member