Jakubovski Vladimir

NUMBERMANIA: Calculate the number 1079 using numbers [2, 1, 2, 6, 87, 986] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

If a70a0 - 11aa6 = 7b1c4 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.