Consider the following table named Student in a relational database. The primary key of this table is rollNum. The SQL query below is executed on this database.SELECT * FROM Student WHERE gender = 'F' AND marks > 65;The number of rows returned by the query is _________.

The query filters rows from the Student table based on the condition:

Let us evaluate each tuple in the Student relation:

1. rollNum = 1 (name = 'Naman', gender = 'M', marks = 62): gender is not 'F'. (False)

2. rollNum = 2 (name = 'Aliya', gender = 'F', marks = 70): gender = 'F' and $70 > 65$. (True)

3. rollNum = 3 (name = 'Aliya', gender = 'F', marks = 80): gender = 'F' and $80 > 65$. (True)

4. rollNum = 4 (name = 'James', gender = 'M', marks = 82): gender is not 'F'. (False)

5. rollNum = 5 (name = 'Swati', gender = 'F', marks = 65): marks is equal to $65$, not strictly greater than $65$. (False)

Thus, only $2$ rows (rollNum 2 and 3) satisfy both conditions.

The number of rows returned by the query is 2.