Riddle: John was very tired after a long day of work. He went to bed at 10 p.m., wound his alarm clock and set it for noon the next day. Since John fell asleep almost immediately, how many hours of sleep did he get before the alarm woke him?
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Rating: 100%
Rating: 67%
Riddle: A circle of stones, never in rows. Stacked one on the other, mystery it sows. What is it?
Rating: 100%
Rating: 100%