how many [the things you have to count] are there?
ENTRE 1 et 100 il y a 98 chiffres.
"how many hours are there in one month?"
Il y en a combien d'élèves?
combien de mois est-ce qu'il y a dans l'année ? means "how many months are there in the year?" in English.
Combien d'os y a-t-il en moyenne chez un oiseau? in French is "How many bones on average do birds have?" in English.
how many [the things you have to count] are there?
ENTRE 1 et 100 il y a 98 chiffres.
"how many hours are there in one month?"
How many different (kinds of) omelettes are there on the menu?
"Il y a combien d'habitants" is French for "how many inhabitants are there." It is a question inquiring about the population of a place.
Il y a combien de règles? in French means "How many rules are there?" in English.
Environ 700 000 habitants à Washington D.C.
Well, honey, there are 7 days in a week. Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday. Easy peasy lemon squeezy.
Il y a combien de jours dans une semaine = "How many days are there in a week?"
combien d'élèves y a-t-il dans votre classe means how many pupils are there in your class / classroom. 'comment d'élèves' is not correct.
Il y en a combien d'élèves?