Answer:
51015
Explanation:
Var b is a string, and it'll treat addition like <em>string concatenation </em>(aka just adding a message.) Since it's concatenation, it'll then turn the numbers/integers into strings.
This kind of behavior might be different depending on the language, though. Some languages might not allow this. (For example, C and C++)
Answer:
<h2>
Analytical Engine</h2>
Explanation:
Analytical Engine, generally considered the first computer, designed and partly built by the English inventor Charles Babbage in the 19th century (he worked on it until his death in 1871).
I think it is WAN (Wide Area Network).
Answer:
I believe it is "Know what you are looking for and carefully filter information for accuracy."
The answer here is Blind carbon copy (bcc).
The original recipients of the letter are unable to see (blind) who else receives a copy if those parties are on the bcc list.
