Quantum

[ Information | Background | The CyberTeaser | Quantum News | Miscellaneous Stuff ]

Solution to CyberTeaser B231

The short (hour) hand of a clock turns at the rate of 360/12 hours = 30 per hour, or per minute. The long (minute) hand turns at the rate of 360/60 minutes = 6 per minute. Thus the angle between the short hand and the direction of 7:00 o’clock is 38 = 19. The angle between the long hand and the same direction is 38 6 – 210 = 18. Therefore, the answer is 1.

CyberTeaser Archive


Quantum Control Panel
Information | Background | The CyberTeaser | Quantum News | Miscellaneous Stuff


Copyright 1998 National Science Teachers Association
All rights reserved