# Fibonacci: The Life Of Leonardo Of Pisa

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In fact, he contributed to the writing of geometry, commercial arithmetic, and irrational numbers as well as developed the concept of zero (Hom, 2013). Fibonacci was the first to use the horizontal fraction bar notation in his work, but he was best known for his Fibonacci Sequence (Fibonacci, n.d.). Fibonacci’s numbers always start with either a zero or a one and to obtain the next number in the sequence, one simply adds the previous two pairs of numbers (Fibonacci Numbers, n.d.). This discovery, also known as the first recursive number sequence in Europe, was a complete accident due to his work on a hypothetical condition of the population of rabbits (Fibonacci, n.d.). Fibonacci’s work concerning the rabbits was one that consisted of the perfect situation in which a male and female rabbit were placed in a field to mate. The idea situation was if the rabbits mated at the end of their first month of life, by the age of two months another pair of rabbits would be born. Fibonacci thought if the rabbits continued with each pair mating at the end of their first month of life, the rabbit’s family would consist of the number of new pairs, which is the number of pairs in month n – 2, plus the number of pairs alive the previous month (n – 1) which is the end of the nth month and all of this is known as the nth Fibonacci number (Fibonacci Numbers n.d.). Though Fibonacci

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