Asked in Geometry
Geometry
How many times does the minute hand of a clock overlap with the hour hand from 10am to 12am?
Answer

Wiki User
June 16, 2012 2:47PM
23 times in all.
Note that from 11:00 to 11:59 (am or pm) the hands can never overlap. Thus from 10am to 11:59am, the hands will overlap just once at around 10:54am. The hands will overlap again at exactly 12:00pm (noon). And from 12:01pm to 12:am (midnight) the hands will overlap another 11 times.
The following times are the approximate overlapping times.
- 10:54am
- 12:00pm (noon)
- 1:06pm
- 2:11pm
- 3:16pm
- 4:21pm
- 5:27pm
- 6:32pm
- 7:38pm
- 8:43pm
- 9:49pm
- 10:54pm
- 12:00am (midnight).
Related Questions
Asked in Math and Arithmetic, Brain Teasers and Logic Puzzles, Roman Numerals
How many times a day do the hour hand and minute hand of the clock lie in a straight line?

During the course of a full 24 hour day, the hour and minute
hands of an analog clock lay in a straight line 22 times: 11 times
in the morning and 11 times in the afternoon/evening, as
follows:
12:32AM, 01:38AM, 02:43AM, 03:49AM, 04:54AM, 06:00AM,
07:05AM, 08:10AM, 09:16AM, 10:21AM, 11:27AM
then
12:32PM, 01:38PM, 02:43PM, 03:49PM, 04:54PM, 06:00PM,
07:05PM, 08:10PM, 09:16PM, 10:21PM, 11:27PM