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Answers:
1) All of them. Every month has at least 28 days.
2) 1 hour. If you take a pill at 1 o'clock,then another at 1.30 and the last at 2 o'clock,they will be taken in 1 hour.
3) 1 hour. It is a wind up alarm clock which cannot discriminate between a.m. and p.m.
4) 70. Dividing by half is the same as multiplying by 2.
5) 9 live sheep.
6) The match.
7) White. If all walls face south, the house must be on the North Pole.
8) 2 apples. I HAVE 3 APPLES, YOU TAKE 2, WHAT DO YOU HAVE?
9) None. It was Noah, not Moses.
10) YOU are the driver.