Pourquoi de onze pas d’onze?

Hi Stephanie,

You do not use elision with 'onze' and you cannot liaise if a consonant comes before it either,  so you will say -

Les //onze étudiants sont arrivés en retard 

without liaising between the -s of les and the -é of étudiants.

I suppose it is to make it clear that we are talking about the number eleven.