How toWrite 1 by using all the ten digits?

To write the number 1 using all ten digits (0-9), you can use a mathematical expression such as:

[ 1 = \frac{2 + 3 - 4 + 5 + 6 - 7 + 8 + 9 + 0}{10} ]

This way, you utilize each digit exactly once while performing operations that yield the result of 1.