Instructional Video8:19
Zach Star

If the hour and minute hand on a clock look identical, can you always determine the time?

12th - Higher Ed
The answer is no, you cannot always tell the time on this clock, but most of the time you can. There are 132 moments/configurations in a 12 hour period where you wouldn't know the time because at those moments either hand could be the...
Instructional Video5:51
Instructional Video3:40
Brian McLogan

Pyramid of Circles | Can you Solve?

12th - Higher Ed
Pyramid of Circles | Can you Solve?