How many squares on a chessboard?

Category: 
Correct Answers: 
27
Points: 
1

Calculate the number 7633

NUMBERMANIA: Calculate the number 7633 using numbers [7, 7, 8, 3, 33, 513] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
1
Points: 
10

Calculate the number 4062

NUMBERMANIA: Calculate the number 4062 using numbers [5, 6, 6, 9, 42, 567] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
3
Points: 
9

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.
Category: 
Correct Answers: 
1
Points: 
10

What number comes next?

Look at the series, determine the pattern, and find the value of the unknown number!
Category: 
Correct Answers: 
5
Points: 
6
Enter your answer
OK
enter your answer and press button OK
close