A series of natural numbers 𝐹1, 𝐹2, 𝐹3, 𝐹4, 𝐹5, 𝐹6, 𝐹7, … obeys 𝐹𝑛+1 = 𝐹𝑛 + 𝐹𝑛−1 for all integers 𝑛 ≥ 2 .
If 𝐹6 = 37, and 𝐹7 = 60, then what is 𝐹1 ?

Question

A series of natural numbers 𝐹1, 𝐹2, 𝐹3, 𝐹4, 𝐹5, 𝐹6, 𝐹7, … obeys 𝐹𝑛+1 = 𝐹𝑛 + 𝐹𝑛−1 for all integers 𝑛 ≥ 2 .

If 𝐹6 = 37, and 𝐹7 = 60, then what is 𝐹1 ?

Accepted Answer

Correct answer: A

Answer

A. 4

Answer

B. 5

Answer

C. 8

Answer

D. 9

A series of natural numbers 𝐹1, 𝐹2, 𝐹3, 𝐹4, 𝐹5, 𝐹6, 𝐹7, … obeys 𝐹𝑛+1…