The mathematicians at Sun Tan University have published 14 research papers this year.The department chair wants to display them in the lobby. The display case can show 4 at a time. How many arrangements of 4 research papers are possible?
The mathematicians at Sun Tan University have published 14 research papers this year.The department chair wants to
display them in the lobby. The display case can show 4 at a time. How many arrangements of 4 research papers are possible?