# Who is the mysterious person behind the glass?

## Calculate the number 678

NUMBERMANIA: Calculate the number 678 using numbers [3, 8, 9, 5, 80, 315] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

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Correct Answers:

0

Points:

10

## 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:

20

Points:

1

## What number comes next?

Look at the series (5391, 8427, 3176, 5351), determine the pattern, and find the value of the next number!

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Correct Answers:

71

Points:

1

## Calculate the number 7180

NUMBERMANIA: Calculate the number 7180 using numbers [3, 8, 6, 6, 13, 875] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

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Correct Answers:

1

Points:

10