If You don't want to add the MoreLinq library on your challenge just to have the DistinctBy features You'll be able to get the same final result using the overload of Linq's Unique technique that will take in an IEqualityComparer argument. If It is impossible with LINQ, what might be https://propertyingurugram.in/gurugram-real-estate-metros-extension-to-push-housing-commercial-realty-at-dwarka-expressway/