The 7 Rings
You arrive at a hotel and have 3 sets of golden rings. The first set of rings
has 4 rings, the second set has 2 rings and the third only has one ring.
You cannot take these sets of rings apart, exchange them for a different form of currency, and
the hotel clerk has no change. You want to stay at the hotel for 7 nights, and you
have to pay one gold ring for each night that you stay. You cannot pay in advance,
or all at once at the end of your stay. How do you pay for your 7 nights at the hotel
Hint(s) | Answer
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