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
Which of the following is not a comparison operator?
A). ==
B). >
C). <=
D). =
Which of the following is a logical operator in JavaScript?
A). &&
B). ||
C). !
D). All of the above
What is the output of 10 > 5 && 5 < 2?
A). 1
B). 0
C). 1
D). 0
What is the result of '5' - 2?
A). 3
B). 3
C). 03-May
D). NaN
Which of the following operators can be used to compare two values, including type comparison?
A). ==
B). =
C). ===
D). !==
Which operator is used to assign a value to a variable in JavaScript?
A). =
B). ==
C). ===
D). =>
What does the typeof operator return for an array?
A). object
B). array
C). list
D). collection
What is the value of the expression null == undefined?
A). 1
B). 0
C). null
D). undefined
What is the result of 10 % 3 in JavaScript?
A). 0
B). 1
C). 2
D). 3
What is the result of the expression 3 * '3'?
A). 9
B). 9
C). 33
D). NaN