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28 replies to this topic

#1 bonanova

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Posted 03 April 2008 - 04:59 PM

A clock chimes the hour, every hour on the hour, and once each quarter hour in between.
If you hear it chime once, what is the longest you may have to wait to be sure what time it is?
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The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
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#2 jcalonego

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Posted 03 April 2008 - 05:06 PM

A clock chimes the hour, every hour on the hour, and once each quarter hour in between.
If you hear it chime once, what is the longest you have to wait to be sure what time it is?

Spoiler for good one!

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#3 bonanova

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Posted 03 April 2008 - 05:08 PM

Spoiler for good one!

Close, but not quite. It's an even better one! B))
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#4 finance_it

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Posted 03 April 2008 - 05:24 PM

Spoiler for time

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#5 GIJeff

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Posted 03 April 2008 - 06:27 PM

Spoiler for hmm

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#6 itachi-san

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Posted 03 April 2008 - 07:04 PM

Assuming a normal day and not DST:

Spoiler for guess

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#7 finance_it

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Posted 03 April 2008 - 08:09 PM

Spoiler for PERHAPS

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#8 bonanova

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Posted 03 April 2008 - 08:30 PM

Good thinking, but no one has it yet.

1:45 [jcalonego] is close, but not quite right.
45 minutes [finance_it] is quite a bit off, and makes a mistake about when the interval could start.
DST [GIJeff] doesn't figure in, because that change is made between 2:00 am and 3:00 am.
2:00 or how long it takes for the clock to strike more than once [itachi-san] is close, too, but not quite right.
Looking at the clock [finance_it] I guess is allowed by the OP, but I meant how long, just by listening. My bad. :huh:

Hint: read the OP carefullly:

If you hear it chime once, what is the longest you may have to wait to be sure what time it is?
Note: "may" inserted, here and OP, for clarity.


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The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
- Bertrand Russell

#9 largeneal

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Posted 03 April 2008 - 08:39 PM

Spoiler for hmmmmmmm...

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#10 Lost in space

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Posted 03 April 2008 - 10:13 PM

A clock chimes the hour, every hour on the hour, and once each quarter hour in between.
If you hear it chime once, what is the longest you may have to wait to be sure what time it is?

Spoiler for Two answers

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