From midnight one day to midnight the next,
exactly how many times do the hands of a clock form a perfect 90 degree angle?
Solution to the Problem:
44 times.Twice every hour, except for 2:00 to 4:00 and 8:00 to 10:00 when right angles are formed three times during each period.
James Alarie also sent in an answer of 46 times if you used a 24-hour clock as used by hospitals and the military.
Correctly solved by:
| 1. Mary Murtishaw | Cabot, Arkansas |
| 2. James Alarie | Flint, Michigan |