The following are agegender data for 14 members at a company

The following are age/gender data for 14 members at a company: 27/M, 30/M, 34/F, 38/M, 39/F, 39/F, 41/M, 41/M, 42/F.49/M, 50/F, 55/M, 58/M, 58/F. A manager will be chosen randomly to serve on a company-wide committee that deals with personnel problems. What is the probability that the chosen manager will be female (F) or under 40 years of age or both?