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Situated on the banks of the Yamuna River in Agra, India, the Taj Mahal is a white marble mausoleum complex that dates back to the 17th century. It was commissioned by Mughal emperor Shah Jahan in ...

One of the most famous series of numbers in history, the Fibonacci sequence was published by Leonardo of Pisa in 1202 in the "Liber Abaci", the "Book of Calculus". The famous sequence of numbers ...