Use of permutations and combinations in India

@article{Kolachana2019UseOP,
  title={Use of permutations and combinations in India},
  author={Aditya Kolachana and K. Mahesh and K. Ramasubramanian},
  journal={Sources and Studies in the History of Mathematics and Physical Sciences},
  year={2019}
}
Interest of the Hindus in the subject of permutations and combinations originated in connection with the variation of the Vedic metres in a very early age. There are specific rules for the calculation of the variation of metres in the Chandaḥ-sūtra of Piṅgala (before 200 BC). Permutations and combinations seem to have been subjects of such a fascinating study for the Hindus that they applied the ideas about them in various other spheres of life, e. g. architecture, music, medicine, and… 
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