What does typeof NaN return?
A). number
B). NaN
C). undefined
D). object
What is the result of true + false?
A). 0
B). 1
C). truefalse
D). NaN
Which of the following is a logical operator in JavaScript?
A). &&
B). ||
C). !
D). All of the above
What is the result of 5 === '5'?
A). 1
B). 0
C). 1
D). 0
Which operator is used for string concatenation in JavaScript?
A). -
B). *
C). +
D). /
What is the result of 10 % 3 in JavaScript?
A). 0
B). 1
C). 2
D). 3
What does the + operator do when used with two numbers?
A). Concatenates them as strings
B). Adds them
C). Multiplies them
D). Subtracts them
What is the result of the expression 5 + '5'?
A). 10
B). 55
C). 55
D). NaN
Which operator checks if two values are not equal and also checks for type?
A). !=
B). !==
C). <
D). >
What is the value of the expression null == undefined?
A). 1
B). 0
C). null
D). undefined