Help with Valid IP Host Address question

I have some homework on Valid IP hosts. You're given an IP address and you have to figure out the class, whether it's private or not, etc... which I havent had any problems with. However, it also asks "Network ID (N), Broadcast address (B) or valid host (V)?" I've been going through my notes/slide shows and googling like crazy and I don't know what they are asking. My classmates are all stuck here as well and I couldn't find anything on stack exchange. Here's an example in case it helps: https://imgur.com/a/7RIPQKm

Apologies in advance if this falls under rule 6 or if this should be posted on a different sub, any help is appreciated.

EDIT: Im not really asking about the classes, or if it is invalid. Im just trying to figure out what they meant by "Network ID (N), Broadcast address (B) or valid host (V)?" What are they asking? Do they just want me to put N, B, or V like whether it is private or not (Y or N)?

EDIT 2: Some people are asking for other examples so heres the full thing https://imgur.com/a/wgilAYe