Beyond the operations with known numbers, even the operations with unknown numbers date back to ancient times. One of the remarkable of these operations is the "false position" method. This method has been preferred for centuries, since it simplifies the solution of the problems, when some arithmetical and algebraic methods make the operations complicated. The method which is known to be treated intensely in both Eastern and Wastern civilization in the Middle Ages, was also adopted by Ottoman

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... thematicians. It is not neglected to explain this method in the arithmetical texts which increased in number, in the traditional period. So the method has become an integral part of the arithmetical texts which is used by both in madrasah and in accounting bureaucracy.