Question

what are the fibbonacci nos.

Answer 1

It is a sequence where the next number is the sum of the two numbers behind it.
E.g.0,1,1,2,3,5,8,...
Here after 0 comes 1 and then the next number is 0+1=1
Then the next number is 1+1=2
After 2 it's 2+1=3
then 3+2=5 and so the sequence continues

Answer 2

Fibonacci numbers are defined as follows:

1, 1, 2, 3, 5, 8, .....

the general term here is

$a_{n} = a_{n - 1} + a_{n - 2}$
the first is taken to be 1.

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