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From: dash@fluke.UUCP
Newsgroups: net.puzzle
Subject: time puzzle
Message-ID: <784@vax2.fluke.UUCP>
Date: Mon, 31-Oct-83 19:29:57 EST
Article-I.D.: vax2.784
Posted: Mon Oct 31 19:29:57 1983
Date-Received: Fri, 4-Nov-83 07:32:16 EST
Organization: John Fluke Mfg. Co., Everett, Wash
Lines: 27

time puzzle

i thought of this puzzle but could not figure out an easy answer -- the
answer is from dick davison, university of washington physics department.

question:

all 3 hands on my watch are together at 12:00:00.  sometime around 1:05
they may be together again... at least the hour and minute hands might
be... but it wouldn't be exactly 1:05, since the hour hand would be
slightly past the '1' at that time.

so, are the hands all together at some time around 1:05?  if so, when?

answer -- rot13:

pbafvqre gur ubhe naq zvahgr unaqf.  gur zvahgr unaq znxrf gjryir
eribyhgvbaf va gjryir ubhef, juvyr gur ubhe unaq znxrf bar, fb gur zvahgr
unaq cnffrf gur ubhe unaq ryrira gvzrf va gjryir ubhef.

guhf gur zvahgr unaq pngpurf hc gb gur ubhe unaq rirel gjryir ryriraguf bs
na ubhe, fb gur unaqf ner gbtrgure bar ryriragu bs na ubhe nsgre bar
b'pybpx.

fvapr gurer ner fvkgl zvahgrf va na ubhe, naq fvkgl frpbaqf va n zvahgr,
lbh pna pbaivapr lbhefrys gung gur frpbaq unaq vf gurer ng gur fnzr gvzr
gbb. guvf frys-pbaivapvat vf yrsg nf na rkrepvfr gb gur fghqrag.