Calculate the number 1458

NUMBERMANIA: Calculate the number 1458 using numbers [8, 8, 5, 3, 98, 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: 
110
Points: 
1

What a winning 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: 
3
Points: 
8

What is hidden in the stereogram?

Stereogram - 3D Image
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Correct Answers: 
52
Points: 
1

GUESS THE NUMBER: When you increase this four-digit number four times you got the same number in reverse order

GUESS THE NUMBER: When you increase this four-digit number four times you got the same number in reverse order
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Correct Answers: 
17
Points: 
1
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