If you don't want so as to add the MoreLinq library in your challenge just to obtain the DistinctBy operation then you can get the exact same final result using the overload of Linq's Unique system that will take in an IEqualityComparer argument. ArindamArindam 17611 silver badge55 bronze badges one https://propertyingurugram.in/residential/ithum-world-gateway-95-sector-95-gurgaon/