Answer:  
                   
                    The Fibonacci sequence is the set of numbers 1,1,2,3,5,8,13,21……………. 
                    In which each number from the third onwards is obtained by 
                    adding the previous two. For example, 5 = 2 + 3 while 21 = 
                    8 + 13. 
                   
                    Fibonacci (1180 - 1250) was an Italian mathematician who is 
                    said to have introduced the sequence in connection with a 
                    problem about the grown in the number of rabbits. The Fibonacci 
                    numbers are a sequence of numbers named after Leonardo of 
                    Pisa, known as Fibonacci. Any sequence which obeys this rule 
                    is a Fibonacci sequence, no matter what the first two numbers 
                    are. For example, 4,7,11,18,29,47……… 
                     
			  
			  
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