Find the right combination

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.
Category: 
Correct Answers: 
4
Points: 
7

Calculate the number 9783

NUMBERMANIA: Calculate the number 9783 using numbers [1, 5, 6, 5, 86, 893] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
1
Points: 
10

Calculate the number 876

NUMBERMANIA: Calculate the number 876 using numbers [9, 9, 5, 5, 10, 781] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
2
Points: 
9

Calculate the number 6560

NUMBERMANIA: Calculate the number 6560 using numbers [2, 2, 8, 8, 69, 890] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
0
Points: 
10

Which is a winning combination of digits?

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.
Category: 
Correct Answers: 
12
Points: 
1
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