Which choice shows the correct way to write $\frac{16}{24}$ in lowest terms?

$A.\frac{16}{24}=\frac{8+8}{8+16}=\frac{8}{16}=\frac{1}{2}$

$B.\frac{16}{24}=\frac{4\cdot 4}{4\cdot 6}=\frac{4}{6}$

$C.\frac{16}{24}=\frac{8\cdot 2}{8\cdot 3}=\frac{2}{3}$

Use set notation and write the elements belonging to the set {x | x is a natural number less than 6}.

Which fraction is not equal to 5/9? A. 15/27 B. 30/54 C. 40/74 D. 55/99

Evaluate each expression. 10³