The internet has had a profound impact on education and how we learn things, a critical complement to any learning environment. Online university classes, massive open online courses (MOOCs), and even ...

If there are nine people in a room and every person shakes hands exactly once with each of the other people, how many handshakes will there be? How can you prove your answer is correct using a model ...

Surely you have experienced this scenario: An employee walks into a manager’s office and declares, “We have a problem.” The manager, not at all phased by this statement, replies calmly, “Well, I know ...