The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, uses number ...

The graphs above, \(y = 2x + 1\) and \(y = 2x - 2\) have the same gradient of 2. The lines are parallel. State the equation of a line that is parallel to \(y = 3x + 7\). To be parallel, two lines must ...

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Dunbar’s Number, the theory that we are only capable of having 150 friendships at any one time, remains surprisingly robust in the digital age. Helen Coffey investigates whether ignoring in-built ...

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Paychex (PAYX) stock offers a 3.5% yield, strong growth potential, and trades at a 19% discount. Read an investment analysis ...