Question

PLEEZ HELP

Answer 1

just test one by one, I do the first one for you as a sample
f(1) =1, f(2) =2 , f(n) =2f(n-1)*f(n-2)
if so, f(3) =2 f(2) *f(1)=2*2*1 =4 check
one more f(4) = 2f(3)*f(2) = 2*4*2 = 16 check
do 2 more and you know whether the first option is the right answer or not