If there are five categories of codes, and 3.2 questions, how many questions relate to the NEC?
Well, seeing as there are two widely used Standards listed - ANSI and IEEE, I would bet that 2 of the 3.2 "Codes + Standards Multiple Guess Questions" would be related to ANSI and IEEE.
That leaves 1.2 "Codes + Standards Multiple Guess Questions" remaining.
Toss those into a Random Number Generator, and odds of getting the NEC Question would be 1:3 at best!
Maybe the remaining 1.2 Question would be a "50/50" between NEC and NESC, as NEMA is a Standard, and might be placed in Random Selection Cache with ANSI and IEEE!
My luck, I would draw an NESC Question, since I never deal with stuff on the Utility side of the Service Disconnect (other than Service Entrance Ducts and Feeders, Transformer Vaults and Pads, and Primary Feeder Ducts).
If I have the desire + time, I will place these 5 Codes + Standards to numeric results of a "0-4" RNG, just to see what comes out!
(not very likely to happen!)