“QueryAfterRemove” (Solution)

Answer

1

Explanation

When you call list.Where(c => c.StartsWith("B")), query will only built, but not executed. The actual execution begins at the moment of the call query.Count(). By this time, the value of list will be { "Foo", "Baz" }, and hence, there exists only one element that starts with the 'B' letter.

Problem