Answer:
[tex]3 {}^{0} - 3 {}^{4} \times 3 {}^{ - 5} [/tex]
[tex] = 1 - 3 {}^{ - 1} [/tex]
[tex] = 1 - \frac{1}{3} [/tex]
[tex] = \frac{2}{3} [/tex]