What is the outcome of the code let x = 10, y = 5, x = 20;?

What is the result of the expression let x = 10, y = x++;?

A). x is 10, y is 11

B). x is 11, y is 10

C). x is 10, y is 10

D). x is 11, y is 11

Which keyword is commonly used to declare multiple variables in one statement in JavaScript?

A). multi

B). var

C). multi

D). let

Which of the following statements is true regarding variable naming in one statement?

A). Variable names can contain spaces

B). Variable names must start with a digit

C). Variable names can start with an underscore

D). Variable names must be unique within the statement

What is the syntax for declaring multiple variables in one statement using the let keyword?

A). let var1, var2, var3;

B). let var1 = value, var2 = value, var3 = value;

C). let var1 = value; let var2 = value; let var3 = value;

D). let (var1, var2, var3);

What happens if you declare multiple variables in one statement without initializing them?

A). It throws a syntax error

B). It initializes all variables to 0

C). It initializes all variables to null

D). It initializes all variables to undefined

Consider the code: let a, b, c;. What will console.log(a); output?

A). a

B). undefined

C). null

D). 0

What is the purpose of initializing multiple variables with the same value in one statement?

A). To save memory

B). To ensure all variables have the same value

C). To increase code complexity

D). To reduce typing

In JavaScript, which of the following data types can be declared using let in one statement?

A). Number

B). String

C). Object

D). All of the above

Which of the following is a benefit of declaring multiple variables in one statement?

A). Improved code organization

B). Reduced code execution time

C). Increased variable scope

D). Limited variable reusability

Which of the following is a disadvantage of declaring multiple variables in one statement?

A). Increased code readability

B). Difficulty in tracking variable values

C). Limited variable scope

D). Reduced memory usage