# How many triangles?

## Fill in the numbers in each empty box, so that sum of each 3 adjacent digits is always 15

Fill in the numbers in each empty box, so that sum of each 3 adjacent digits is always 15. Write solution as one multi-digit number.

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Correct Answers:

12

Points:

1

## Calculate the number 303

NUMBERMANIA: Calculate the number 303 using numbers [9, 3, 7, 1, 10, 25] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

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Correct Answers:

12

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.

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Correct Answers:

3

Points:

8