40 Ponzi schemers are on the government's hit-list. In how many ways can the government name 3 of them as the number one, number two, and number three most evil Ponzi schemer?

3. A company checks its managers and find that 70 of them have an undergraduate degree in Business, 30 have an undergraduate degree in business and a Masters in Business, and 45 have only A Masters in Business. 20 others have neither degree. How many managers are in this company?

How many ways can a treasurer, vice president, and president be chosen from a group of 15 candidates?

A group of 14 people who are members of an investment club wish to choose a president, vice-president, secretary, and treasurer. How many different ways can this be done?

in poker, how many ways can you get three aces and two 3's

In how many ways can 20 athletes be rewarded a first place medal, a second place medal, and a third place medal