A club has 15 members and needs to choose 2 members to be co-presidents. In how many ways can the club choose its co-presidents?​

As of 2013, the world’s total population was about

Cooperation among oligopolies runs counter to the public interest because it leads to underproduction and high prices. in an effort to bring resource allocation closer to the social optimum, public officials attempt to force oligopolies to compete instead of cooperating. consider the following scenario: suppose that the presidents of two auto manufacturing companies exchange text messages in which they discuss jointly raising prices on their new lines of hybrid suvs. this illegal communication would violate which of the following laws? the sherman antitrust act of 1890 the robinson–patman act of 1936 the celler–kefauver act of 1950 the clayton act of 1914

Lance is a member of the professional organization iceaa. he always attends its annual conferences because it provides a great opportunity for with members of the same profession. in addition to the conference, iceaa organizes for members who are seeking better employment opportunities.