The phrase "number of resources" is correct and can be used in written English.
For example, "The number of resources available for this project was limited."
"We have a limited number of resources".
They can use any number of resources on the Internet.
Harvard provides a number of resources to employees facing layoff.
Flickr and YouTube have a large number of resources that come with CC licences.
"There are a tremendous number of resources coming to bear on this city.
The Guardian Teacher Network has a number of resources about the riots of summer 2011.
In so doing, Wicha arranged for a number of resources to augment the piece.
A number of resources, like emissions inventories, remain intact on the E.P.A. site.
We have gathered a significant number of resources for people to know about our black past.
He said that a growing number of resources offer a glimpse of what the collective Web is doing.
African-American Tours There are a number of resources for those looking for an African-American perspective.
