How many dents in the picture?

Stereogram - 3D Image
Category: 
Correct Answers: 
53
Points: 
1

How many triangles can be formed from the given points?

Author: Nebojsa Jevtovic (Serbia)
Category: 
Correct Answers: 
13
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: 
16
Points: 
1

Find the area of the shaded figure

Express result to the accuracy of 3 decimal.
Category: 
Correct Answers: 
6
Points: 
6

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.
Category: 
Correct Answers: 
0
Points: 
10
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