Question

1/7•1/7•1/7=
81•81•81=
(-10).(-10)=
10•10•10•10=

Answer 1

a) $\frac{1}{7} .\frac{1}{7} .\frac{1}{7}$ = $\frac{1}{343}$

b) 81 . 81 . 81 = $81^{3}$ ou 531441

c) (-10) . (-10) = 100

d) 10 . 10 . 10 . 10 = $10^{4}$ ou 10000