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If you run quizzes, sooner or later you are going to have a competitor that disagrees with one of the answers. Even if all the...

A snooker player is setting up the table before a game, and when he starts there are no balls on the table. As he takes...

A snooker player is setting up the table before a game, and when he starts there are no balls on the table. As he takes...

There are six weights - two white, two red and two blue. Apart from the colours all the weights are visibly identical. In each coloured...

There are six weights - two white, two red and two blue. Apart from the colours all the weights are visibly identical. In each coloured...