Returns A Set With Elements That Appear In Any Of The Input Sets #576

________ returns a set with elements that appear in any of the input sets.

Online Quiz This multiple choice question (MCQ) is related to the book/course gs gs112 MongoDB. It can also be found in gs gs112 Aggregation Concepts and Aggregation Mechanics - Pipeline Optimization - Quiz No.1.

________ returns a set with elements that appear in any of the input sets.

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