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Following on from the start time and frequency of quizzes, another thing that crops up often is team sizes. Between us we have been to...

A local farmer employs a ploughman, a carter, a shepherd and a driver. These four employees have the surnames Ploughman, Carter, Shepherd and Driver; however,...

A local farmer employs a ploughman, a carter, a shepherd and a driver. These four employees have the surnames Ploughman, Carter, Shepherd and Driver; however,...

Six identical pieces of string run through an opaque tube; there is no way to identify which ends form one piece of string. At one...

Six identical pieces of string run through an opaque tube; there is no way to identify which ends form one piece of string. At one...