I'd like to understand if there should always be no article before nouns followed by a number, like in the following examples:
- The train arrives at platform 5.
- The flight departs from gate 7.
In my native language, we don't have articles and it is unclear for me to understand why they are not used here. In the example about the train, we a talking about a particular platform at a particular train station. Is it always the case when I talking about some numbered nouns: page 5, house 7, platform 7, etc?
I did some research but I couldn't find explanations for my case. Here is what I found:
'Level' - no article? With an article?. The sentence there was I love playing games at easy level. For that sentence, the answer was that "Easy level" is the name of the level and articles are not used before names. Is it the same case here?
From ELU I found a very detail Why no determiner before either 'lunatic' or 'knight' in “He's more lunatic than he is knight” answer but it didn't cover numbers. From it, I like the example John is president of that corporation with the explanation that the president is unique while John is president of that corporation. It may be similar to platform 5.
There was Noun + number and determiner (page 5, line 2, …) question but there was no explanation for the reason in the answer.