Вказати, які з запитів містять вкладені запити. Вибрати всі правильні відповіді:

Question

Accepted Answer

SELECT id_subj, mark FROM teacher WHERE mark> (SELECT AVG(mark) FROM teacher)

Accepted Answer

SELECT * FROM student WHERE id_stud = ANY (SELECT id_stud FROM teacher);

Answer

SELECT COUNT(*) FROM student

Answer

SELECT SUM(stip) FROM student

Answer

SELECT id_stud FROM teacher WHERE mark IS NULL

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