Question

If $f(n+1)=f\left(n\right)$ for all $n\in N,f\left(7\right)=5$ then $f\left(35\right)=$

• A. $25$
• B. $49$
• C. $35$
• D. $5$

Answer 1

The correct option is D $5$

$f(n+1)=f\left(n\right)$
$\Rightarrow f\left(n\right)=f(n-1)=f(n-2)=...........=f\left(1\right)$
$\therefore f\left(7\right)=5\Rightarrow f\left(35\right)=5$