Correct answer is 20 but It shows Wrong Whats the issue
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Double check your lab/assignment.Are you connected to right cluster/DB
I have Connected to right cluster
Kindly go through the following doc and recheck your query:
If you still have any doubts regarding the query, please let me know.
You are thinking in the right direction except you are querying for exact match.
In arrays, when you query like this:
It means you are querying for all the documents with
document : ["Test"] as it is.
I think, reading documentation: Query an Array or watching the lecture again might help.