1It was a remarkable coincidence that we both wore the same outfit to the party.
2Is it just a coincidence that the company's profits increased after the new marketing strategy was implemented?
3The police are investigating the coincidence of the two crimes happening on the same night in the same neighborhood.
4If you believe in fate, you might think that our meeting was more than just a coincidence.
5The novel explores the idea that there are no coincidences in life, and every event is connected to a larger purpose.