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C Programming

Quick practice

Question 1 of 5

Consider a standard Fibonacci series function as follows:

$f i b(n)=\left\{\begin{array}{ll} 0 & n=0 \\ 1 & n=1 \\ f i b(n-1)+f i b(n-2) & n>1 \end{array}\right\}$

For calculating fib(7), total number of additions required using above function is?

A

14

B

20

C

13

D

42