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.
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Correct Answers: 
6
Points: 
5

Calculate 77+66+68

FUNNY MATH: Calculate 77+66+68 :)
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Correct Answers: 
17
Points: 
1

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: 
3
Points: 
8

Calculate the number 1309

NUMBERMANIA: Calculate the number 1309 using numbers [5, 3, 5, 6, 81, 730] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
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Correct Answers: 
0
Points: 
10

What hides this stereogram?

Stereogram - 3D Image
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Correct Answers: 
74
Points: 
1
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