[color=indigo]1-How many people are in all of those rooms?
Does this mean:
[color=red]a-All in all how many people are in those rooms?
or:
[color=darkblue]b-How many people are in each of those rooms?
[color=indigo]1-How many people are in all of those rooms?
Does this mean:
[color=red]a-All in all how many people are in those rooms?
or:
[color=darkblue]b-How many people are in each of those rooms?
That would usually be a request to be told the total number of people. (all in all)