Python quiz

What is the output of the expression: 2 + 3 * 4 ** 2 - 1?

• 20
• 15
• 10
• 49

In the expression (a + b) * c, what happens first?

• The addition (a + b) happens first.
• The expression is evaluated from right to left.
• The multiplication (c) happens first.
• The addition and multiplication happen simultaneously.

What is the result of 15 // 4?

• 5
• 2
• 4
• 3

Which operator has higher precedence?

• +

• //

• * *

• *

In Python, a library such as pandas is commonly used to handle (a)   .

In a decision structure, the code inside an if block will only execute if the condition is __________.

• true
• undefined
• false
• null

Which of the following is a valid way to declare a variable in Python?

• var x = 10

• let x = 10

• x := 10

• x = 10

In the expression 5 + 2 * 3, what operation is performed second?

• Addition (5 + 2)

• Multiplication (2 * 3)

• Both operations simultaneously

• None of the above

Which Python library is primarily used for data analysis and data manipulation in tabular format?

• NumPy
• Pandas
• Matplotlib
• SciPy

Boolean expressions in Python can be combined using (a)   operators like and, or, and not.