What is the value of the expression 'Hello' + 'World' in JavaScript?
A). 'HelloWorld'
B). 'Hello World'
C). 'Hello+World'
D). Error
Which of the following represents an array in JavaScript?
A). {name: 'John', age: 30}
B). 'Hello'
C). [1, 2, 3]
D). 1
What is the value of the expression '20' - 10 in JavaScript?
A). 10
B). '10'
C). '2010'
D). Error
What is the value of the expression (10 * 3) / 2 in JavaScript?
A). 15
B). 30
C). 20
D). 25
Which of the following represents a null value in JavaScript?
A). undefined
B). 'null'
C). null
D). 0
What data type does the value true represent in JavaScript?
A). Number
B). String
C). Boolean
D). Object
What does the expression (5 > 3) evaluate to in JavaScript?
A). 1
B). 0
C). undefined
D). null
What is the data type of the value 'Hello, World!' in JavaScript?
A). Number
B). String
C). Boolean
D). Array
What is the result of the expression 5 * '3' in JavaScript?
A). 15
B). '15'
C). Error
D). 53
What is the value of the expression !(5 > 3) in JavaScript?
A). 1
B). 0
C). Error
D). null