Question 536896
If digits can repeat there are a lot of choices like 5554.<P>
I digits cannot repeat but 0 is allowed than it can be 7840, or 8740, 0r 7084 etc.<P>
Other 4 digit numbers add to 19.  Some are 7831, 6832 and 5842.<P>
Unless the problem has more constraints, there are many choices.


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