How to return an Observable with an aggregated result of other Observables?

Question

Angular

I came across the rxjs library, which I had not dealt with before.
There is a task, I do not quite understand how to do it in my mind.
There are several queries that return an Observable with a result or 500.
I need to return an Observable with the aggregated result of these queries, all queries should be executed, errors should be shown in the console.
Prompt on what methods to look.

Answer 1

https://blog.angularindepth.com/learn-to-combine-r...
All the possible ways to combine here
Choose the right one and see how to use it
Seems you need a zip