Calculate the number 6650

NUMBERMANIA: Calculate the number 6650 using numbers [7, 7, 4, 3, 21, 922] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
4
Points: 
7

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: 
1
Points: 
10

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: 
2
Points: 
9

Calculate the number 393

NUMBERMANIA: Calculate the number 393 using numbers [8, 2, 3, 6, 20, 25] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
3
Points: 
8

Which number is missing?

Category: 
Correct Answers: 
90
Points: 
1
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