We’re looking for computer specialists who like to solve difficult problems. Call us on this number now: area = 044 switch = (3 exp 2).(10 exp 2)-(3 exp 1).(2 exp 3) extension = (2 exp 3).(10 exp 3) number = area//switch//extension(Explanation)Recruiting-Campaign for McKinsey & Company. The task was to attract information technology graduates and at the same time make a preselection. Only the most ambitious young persons should be reached. The phone numbers were put as a formula and could only be found out by students from that field. The firms name was not mentioned.