Answer / Shilpi Tyagi

The Aggregate() extension method in LINQ is used to apply a user-defined aggregate function (like sum, product, min, max) to a sequence of elements. It takes two parameters: a seed value and a binary function that combines the elements into a single result.nExample:n```csharpnint[] numbers = { 1, 2, 3, 4, 5 };nint sum = numbers.Aggregate((acc, current) => acc + current); // sum will be 15```

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