<div>When adding a string and a number in JavaScript, it concatenates the values as strings from left to right, resulting in '52'. Subtraction then occurs, converting '52' to a number, resulting in 52 - 1 = 51.</div>
What will be the result of '10' + 10 in JavaScript?
A). '1010'
B). 20
C). NaN
D). Error
What will be the result of 3 * 'A' in JavaScript?
A). Error
B). NaN
C). 0
D). 3
What will be the output of '2' + 2 + 2 in JavaScript?
A). '222'
B). 6
C). 4
D). Error
What does the typeof operator return for an array in JavaScript?
A). 'array'
B). 'object'
C). 'null'
D). 'undefined'
What will be the output of 10 + '2' - 1 in JavaScript?
A). '101'
B). '10'
C). NaN
D). Error
What will be the value of x after executing the code: let x = 5; x += '2';?
A). 7
B). '72'
C). 52
D). NaN
What does the operator
A).
B). do in JavaScript?
C). Logical AND
D). Logical OR
What will be the output of 20 / '5' in JavaScript?
A). 4
B). NaN
C). Infinity
D). Error
What will be the result of 10 + '5' in JavaScript?
A). 15
B). 105
C). NaN
D). Error
What does the unary operator + do to a string in JavaScript?
A). Concatenates it
B). Ignores it
C). Converts it to a number
D). Throws an error