puzzle 1  vent tanks

Logic circuits 1, 4, and 25 run in parallel to circuits A, B, and E respectively. 
Logic circuit G coming on line. Searching for parallel circuit... 

1. Circuit 16 
2. Circuit 30 
3. Circuit 49 
4. Circuit 62 

The correct answer is 3. The square root of the logic circuit numbers, 1, 2, and 5, pair up with their position in the alphabet. G, the 7th letter, matches the square 49.

Puzzle 2   Enviroment Door

In current logic pattern, half of 5 is 3. What is one-third of 10? 
1. 2 
2. 3 
3. 4 
4. 5 

The correct answer is #3, 4 being one-third. 

Puzzle 3  M478 Core Door

Logical sequence activated. Identify missing symbol from following series: 
B C D E I K O X 
1. H 
2. M 
3. S 
4. Y 

The correct answer is 1. All the letters in the sequence remain the same when flipped vertically. 