Question 981790
Hi there,
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89.
The formula:
Fn = Fn-1 + Fn-2
The next number in the sequence is 
formed by adding the previous two together.
Therefore Carl would be sending 55
red roses to Nicole on the tenth day
if he began at the first '1'.
If he began with the 2nd '1'
she would receive 89 red roses.
Hope this helps :-)