Answer:
the order is
[tex]2\times 10^{-10}\\\\1\times 10^{-10}\\\\8\times 10^{-11}\\\\7\times 10^{-11}\\[/tex]
Step-by-step explanation:
The numbers are
[tex]1\times 10^{-10}\\\\2\times 10^{-10}\\\\7\times 10^{-11}\\\\8\times 10^{-11}\\[/tex]
The number if greater is it has less negative exponents than others.
The deceasing order is
[tex]2\times 10^{-10}\\\\1\times 10^{-10}\\\\8\times 10^{-11}\\\\7\times 10^{-11}\\[/tex]
