Question: Database https://courses.edx.org/asset-v1:StanfordOnline+SOE.YDB-SQL0001+2T2020+type@asset+block/socialdata.html Q7 Find the difference between the number of students in the school and the number of different first names. Note: Your queries are

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Q7

Find the difference between the number of students in the school and the number of different first names.

Note: Your queries are executed using SQLite, so you must conform to the SQL constructs supported by SQLite. Need Codes!

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