Question 87547
I disagree with the previous presented solution, because the "3" cannot be used both in the first and the last digit, the answer 1080 is too high.. 

This is what I have:  

(for each first digit being) -- (next 3 digits combinations) * (last digit)

2  -- 6C3 * 3C1

3  --  (special case)  6C3 * 2C1

4  -- 6C3 * 3C1 

add these 3 categories together and we get a total of 960!