Fibonacci Expressions 8Bfabb
1. The problem involves interpreting expressions related to Fibonacci numbers and matching them to verbal descriptions.
2. Recall the Fibonacci sequence $F_n$ is defined as $F_0=0$, $F_1=1$, and $F_n=F_{n-1}+F_{n-2}$ for $n\geq 2$.
3. We analyze the expressions given:
- $F_{3N} - 2$ means "two less than the $(3N)$th Fibonacci number".
- $3F_{N} - 2$ means "three times the $N$th Fibonacci number, then subtract 2".
4. From the options in part (b), the correct verbal description for $F_{3N} - 2$ is:
**A. two less than (3N)th Fibonacci number**
5. For $3F_{N} - 2$, the correct verbal description is:
**G. three less than two times the Nth Fibonacci number** is incorrect because it implies $2F_N - 3$.
**E. two less than three times the Nth Fibonacci number** matches $3F_N - 2$.
6. Therefore, the correct matches are:
- $F_{3N} - 2$ corresponds to option A.
- $3F_N - 2$ corresponds to option E.
Final answer:
- For $F_{3N} - 2$: A. two less than (3N)th Fibonacci number
- For $3F_N - 2$: E. two less than three times the Nth Fibonacci number