Answer it quickly. I have bit dificulty in it

Answer:
Step-by-step explanation:
Firts what you need to do is to have same bases:
8^n = 16^4
(2^3)^n = (2^4)^4
2^3n = 2^16
And now when your bases are equal then your exponents must be equal too so:
3n = 16
n=16/3