$10^{100}$ is a googol. $1000^{100}$ equals
(A) 100 googol
(D) googol ${ }^{2}$
(B) 3 googol
(E) googol ${ }^{3}$
(C) googolgoogol
Using exponent laws, $1000^{100}=\left(10^{3}\right)^{100}=10^{300}=\left(10^{100}\right)^{3}=$ googol $^{3}$.

ANswer: (E)