Operators and Expressions Quiz: Test Your Understanding

Question 1

What is the result of the expression: 10 + 5 * 2?

Accepted Answer

20

Answer

30

Answer

15

Answer

100

Question 2

Which operator is used to assign a value to a variable?

Accepted Answer

=

Answer

*

Answer

+

Answer

==

Question 3

What is the result of the expression: 10 % 3?

Accepted Answer

1

Answer

7

Answer

3

Answer

0

Question 4

Which operator checks if two values are equal?

Accepted Answer

==

Answer

>=

Answer

!=

Answer

=

Question 5

Which of these is a valid expression in most programming languages?

Accepted Answer

x + y * 2

Answer

2 * + x y

Answer

x = y + 2 *

Answer

x + y = 2

Question 6

What does the '++' operator do?

Accepted Answer

Increases a variable by 1.

Answer

Assigns a value to a variable.

Answer

Decreases a variable by 1.

Answer

Checks for equality.

Question 7

What is the result of the expression 'true && false'?

Accepted Answer

false

Answer

true

Answer

error

Answer

undefined

Question 8

What is the purpose of parentheses in an expression?

Accepted Answer

To change the order of operations.

Answer

To create a new block of code.

Answer

To define variables.

Answer

To declare functions.