Simple....
you have three options.....
\(4.9* 10^{4}\)
\(1.2* 10^{5}\)
\(5.1* 10^{4}\)
We can clearly see which one is the least and which one is the greatest....
\(4.9* 10^{4}\) is the smallest
\(5.1* 10^{4}\) is the next biggest
\(1.2* 10^{5}\) is the greatest
Thus, your answer..
