Question

The current year in the chinese calender is 4715. The digits in 4715 are rearranged to form all possible 4-digit whole number arrangements. find the sum of all such whole numbers.

Answer 1

Answer:

113322

Step-by-step explanation:

There are 4! = 24 possible combinations.  Those combinations are:

1457, 1475, 1547, 1574, 1745, 1754,

4157, 4175, 4517, 4571, 4715, 4751,

5147, 5174, 5417, 5471, 5714, 5741,

7145, 7154, 7415, 7451, 7514, 7541

The sum of those 24 combinations is 113322.