Answer & Solution
Answer: Option B
Solution:
In JavaScript, the + operator concatenates strings. Since one operand is a string, the number is converted to a string, resulting in '55'.
Q
What is the result of the expression 5 + '5'?
Related Questions on Average
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 true + false?
A). 0
B). 1
C). truefalse
D). NaN
Which operator would you use to determine the remainder of a division in JavaScript?
A). /
B). %
C). //
D). \
What is the result of the expression 3 * '3'?
A). 9
B). 9
C). 33
D). NaN
What does the typeof operator return for a function?
A). function
B). object
C). undefined
D). method
Which of the following is not a comparison operator?
A). ==
B). >
C). <=
D). =
Which operator checks if two values are not equal and also checks for type?
A). !=
B). !==
C). <
D). >
What is the result of '5' - 2?
A). 3
B). 3
C). 03-May
D). NaN
What does the typeof operator return for an array?
A). object
B). array
C). list
D). collection
What does typeof NaN return?
A). number
B). NaN
C). undefined
D). object