Ex 1.


a. He attended one of schools in London.


b. He attended one of the schools in London.


Ex 2.


a. He had a dinner at one of restaurants in New York.


b.. He had a dinner at one of the restaurants in New York.


Q. Are all of the above grammatically acceptable, meaning you do not necessarily need the article "the" in front of schools/restaurants in the above cases?


Thanks in advance.