Question

What the least number that can be made using each digit exactly once? Explan why the value of the 4 is greater than the value of the 5.

Answer 1

first goes the bigger numbers
9.876.543.210

4 is greater than 5 because decimal system have an order and we say so. However if we have apples and we have 4 in one side and 5 in the other, we can easily see the difference