Indian | A Nice Olympiads Trick | Which is Bigger? 

well this one is answered forever. in any a^b vs b^a the closer to e is the winner as long as both a and b are on the same side of e. meaning if you had sone whacking 2.5^2 vs 2^2.5 then 2.5^2 is the winner. in the question from the video both a and b are > 0 so 16^18 is the greater.

Si el cociente es menor que 1 el número mayor es el segundo 16^18 no el primero como parece concluir el profesor