Train Passes the Tunnel

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?




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An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

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Can you write down eight eights so that they add up to one thousand?

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At a Society election for president, precisely 963 votes were cast.
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A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
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All of Jacob's shoes are red except two.
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Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

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Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

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In a town, there are four houses located at different distances from each other. Following are the distances:

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In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki