1)

$(2.4 \times 10^{3})\div (8 \times 10^{-2})=?$


A) $(3 \times 10^{-5})$

B) $(3 \times 10^{4})$

C) $(3 \times 10^{5})$

D) 30

Answer:

Option B

Explanation:

$=(2.4 \times 10^{3})\div (8 \times 10^{-2})$

$=\frac{24 \times 10^{2}}{8 \times 10^{-2}}$

$=(3\times 10^{4})$