Zorica Bera

If 828ba - 52bc7 = 3b787 find number abc. Multiple solutions may exist.

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.

NUMBERMANIA: Calculate the number 8586 using numbers [9, 1, 3, 9, 67, 884] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.