It is well known that a stopped clock gives the exact time twice a day, while a clock that gains or loses time may not be right more than once over a period of months.

My clever father adjusted his clock to give the correct time at least twice a day, while running at the normal rate.

Assuming he was not able to set it perfectly (a reasonable assumption) how did he do it?

Possibly this "clever father person" did absolutely nothing to change the clock. The problem states that the clock shows the correct time at LEAST TWICE A DAY however it does not state that the clock cannot show the correct time always.

Posted by Jen on 2005-07-11 04:07:30