“There are only four pubs in this village,” the visitor was informed, “one in each street. The village’s four streets meet at the crossroads at right-angles. This street is the High Street. To reach the Blue Boar from the Griffin you must turn left. To reach the Dragon from the Red Lion you have to turn right.”
The visitor entered three of the pubs; he arrived at the crossroads three times during this pilgrimage, turning left the first time, going straight across the second, and turning right the third time. He spent the night at the Blue Boar.
‘Which pub stands in the High Street?’
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The Red Lion.
The engineering department was arranging for a rather expensive catered lunch to bid farewell to their retiring colleague. They calculated that it would cost each person $30. One good mathematician remarked, "It's lucky that there aren't five fewer of us to split the...