Calculate the number 436

NUMBERMANIA: Calculate the number 436 using numbers [3, 6, 2, 5, 84, 985] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
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Correct Answers: 
2
Points: 
10

Calculate the number 4937

NUMBERMANIA: Calculate the number 4937 using numbers [8, 7, 9, 5, 58, 721] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
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Correct Answers: 
1
Points: 
10

Which number should replace the question mark?

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Correct Answers: 
17
Points: 
10

What is hidden in 3D image?

Stereogram - 3D Image
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Correct Answers: 
66
Points: 
1

What number comes next?

Look at the series (1,9,5,49,11,169,17), determine the pattern, and find the value of the next number!
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Correct Answers: 
37
Points: 
1
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