Superdog: Answer
When Superdog is traveling at 2048 km/h, he has exceeded the speed of
sound (which, under normal circumstances, is somewhat larger than 1024
km/h which is the previous step). He hears no further clanks. That's
where he stops doubling his speed. Correct answer: 2048 km/h.
Surprisingly many people (about 50% of all responses) seemed to
think that calculating the series makes up a hard enough problem, so
that they miss the caveat (and suggest 4096 km/h, or even 8192 km/h).
Statistics and Hall of Fame
Between 1996-01-31 and 1996-05-08 the page was fetched 188 times.
Approvable answers were received from the following persons:
[Sorry, I fouled up and removed, by accident, most of the mail answers I
received. Here are, however, the first who sent a correct answer:]
- Tapani Lindgren
- Hannu Vuori
- Jari Tomppo
- Adlai Waksman
- Tomi Kause
- Ari Tervo
- Mika T. Pyykkönen
- Jykä & Antti
Njet Problem Collection
To pjt:s home page.
