1. Always
2. Always
3. Never
Answer:

Step-by-step explanation:
From the question we are told that
Six wire are attached to a circuit board
Generally using multiplication rule
Let number of possible sequence be given as S
Mathematically

Therefore
Number of possible sequence 
Answer:
-41
Step-by-step explanation:
Answer;
They are 3 terms
The terms are the numbers and the variables separated by the minus sign and the plus sign