The phrase "a number of interactions" is correct and usable in written English.
It can be used when referring to multiple instances of communication or engagement between individuals or groups.
Example: "The study analyzed a number of interactions between the participants to determine the effectiveness of the new teaching method."
Alternatives: "several interactions" or "multiple interactions".
George Conway outlined a number of interactions with Trump that date back more than a decade and said his wife had known him for that long.
Not surprisingly, there appear to be a number of interactions between various flue gas constituents that affect mercury speciation.
This study will permit the designer to determine the most relevant product through a number of interactions with the consumer.
What they had people do is observe a number of interactions, and then they showed subjects a new block that they'd never seen interact with anything before.
A number of interactions highlight the need for STEM EPO leaders to speak directly to a variety of social goals and priorities.
Simulations also revealed different unbinding pathways between the two receptor subtypes, enabling identification of a number of interactions at locations far from the orthosteric binding site which may explain the difference in [ϒ4E]GID potency.
"There were also a number of interactions with Donald Trump that were, uh" — Urbahn paused and began to chuckle — "interesting". They agreed to take Snodgrass on as a client, helped him write a proposal and, in December, got him a six-figure book deal with a Penguin imprint.
As a very unhappy Comcast customer, I've had a number of interactions with Comcast's Twitter team.
After a number of interactions by both phone and e-mail, Nolan decides to go to a young start-up company and not to Microsoft.
Specifically, what if Facebook decides to apply resources to construct a full "suite" of federated yet interconnected native iPhone and iPad applications to satisfy a number of interactions within Facebook, entirely powered by your friends?
It's a sizeable volume on its own, but — given the Twitter model — it's even more impactful since they spurred a number of interactions and retweets outside those spam accounts, perpetuated by individuals.
