GUESS THE NUMBER: When you increase this four-digit number four times you got the same number in reverse order

GUESS THE NUMBER: When you increase this four-digit number four times you got the same number in reverse order
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Correct Answers: 
17
Points: 
1

Calculate the number 1924

NUMBERMANIA: Calculate the number 1924 using numbers [9, 5, 9, 1, 21, 106] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
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Correct Answers: 
4
Points: 
7

Find the right 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: 
5
Points: 
6

Determine the value of the number BCDC

Determine the value of the number BCDC
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Correct Answers: 
18
Points: 
1

Calculate the number 5315

NUMBERMANIA: Calculate the number 5315 using numbers [3, 9, 3, 4, 40, 721] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Category: 
Correct Answers: 
0
Points: 
10
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