Question 940253
<pre>
_ _ _ _ _
</pre>
2.   the first digit is odd and larger than the third digit
3.   the fourth digit is three times the first
<pre>
That narrows it down to these four:

1 _ 0 3 _,   3 _ 2 9 _,  3 _ 1 9 _,  3 _ 0 9 _
</pre>
1.   all digits are different
4.   the final digit is the product of the second and third digit
<pre>
That rules out the 3rd digit being 0 or 1 for in either case it 
would make the final digit be the same as the 3rd digit, but they 
are all different. So we have

3 _ 2 9 _ 

4.   the final digit is the product of the second and third digit

The only digit not used that we can multiply by third digit 2 and 
get a different final digit is 4, and we get 4x2 = 8 for the final
digit. 

Answer: 3 4 2 9 8

Edwin</pre>