mathematical puzzles

Whatsapp Puzzle Game Quiz 2 :Crack the Code 

Crack the code : 

6 1 4 - One Number is correct but wrong place
6 8 2 - One Number is correct and well placed
2 0 6 - Two Numbers are correct but Wrong Places
8 7 0 - One Number is correct but wrong place
7 3 8 - Nothing is correct

Answer :
Code is 042