Answer:
[tex]F_{k^{th}}=F_{(k-2)^{th}}+F_{(k-1)^{th}}[/tex]
Step-by-step explanation:
Since each number is the sum of it's 2 preceding numbers thus mathematically it can be written as
[tex]F_{k^{th}}=F_{(k-2)^{th}}+F_{(k-1)^{th}}[/tex]
Fibonacci Series can be written as
1,1,2,3,5,8,13...