2015-05-22
3 indexed posts · All posts for this date, newest first.
What are the best riddles you've heard that are short enough for Twitter?
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Another good riddle: drill a hole thru a sphere such that the height of what remains of the sphere is 10cm. What is its remaining volume?
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Astronomer Royal Martin Rees: How soon will robots take over the world? - via @Telegraph http://t.co/DStxgM0S8F
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