6. Which of the following has the largest value?
A $2^{6}$
B $3^{5}$
C $4^{4}$
D $5^{3}$
E $6^{2}$
6. C The values of the five options are $64,243,256,125,36$ respectively. Of these 256 is the largest, so $4^{4}$ is the largest of the options.