Question

Express 640 as the product of prime factors

Answer 1

$$\begin{gathered} \mathrm{The}\mathrm{prime}\mathrm{factorisation}\mathrm{of}640\mathrm{is}: \\ 640=2\times 2\times 2\times 2\times 2\times 2\times 2\times 5 \end{gathered}$$