![]() ![]() That has saved us all a lot of trouble! Thank you Leonardo.įibonacci Day is November 23rd, as it has the digits "1, 1, 2, 3" which is part of the sequence. "Fibonacci" was his nickname, which roughly means "Son of Bonacci".Īs well as being famous for the Fibonacci Sequence, he helped spread Hindu-Arabic Numerals (like our present numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9) through Europe in place of Roman Numerals (I, II, III, IV, V, etc). To find the second term we substitute n 2 into the n th term. ![]() His real name was Leonardo Pisano Bogollo, and he lived between 11 in Italy. Historyįibonacci was not the first to know about the sequence, it was known in India hundreds of years before! Then we go to ten sets of ten fingers, which is 10 × 10 100 that is. overcococos 111 - S - 1 2 3 4 5 6 7 8 9 10 11. The sum of all natural numbers 1 to 100 can be calculated using the formula, S n/22a + (n 1) × d, where n is the total number of natural numbers from 1 to 100, d is the difference between the two consecutive terms, and a is the first term. Which says that term "−n" is equal to (−1) n+1 times term "n", and the value (−1) n+1 neatly makes the correct +1, −1, +1, −1. Our fingers are called digits, and the numerals 0, 1, 2, 3, 4, 5, 6, 7, 8. The natural numbers from 1 to 100 can be written as 1, 2, 3, 4,5.100 is an arithmetic progression (A.P). In fact the sequence below zero has the same numbers as the sequence above zero, except they follow a +-+. (Prove to yourself that each number is found by adding up the two numbers before it!) ![]()
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