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 is the output of 10 > 5 && 5 < 2?
A). 1
B). 0
C). 1
D). 0
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 does the typeof operator return for an array?
A). object
B). array
C). list
D). collection
Which of the following operators can be used to compare two values, including type comparison?
A). ==
B). =
C). ===
D). !==
What does typeof NaN return?
A). number
B). NaN
C). undefined
D). object
What does the typeof operator return for a function?
A). function
B). object
C). undefined
D). method
Which operator is used for string concatenation in JavaScript?
A). -
B). *
C). +
D). /
What is the result of 5 === '5'?
A). 1
B). 0
C). 1
D). 0
Which operator is used to assign a value to a variable in JavaScript?
A). =
B). ==
C). ===
D). =>
What is the value of the expression null == undefined?
A). 1
B). 0
C). null
D). undefined