Q: What is the result of the following code?

var num1 = 10;
var num2 = "20";
console.log(num1 + num2);

 

Answer: C

In JavaScript, the + operator can be used to add numbers or concatenate strings.
If both operands are numbers, the + operator will perform addition.
If either operand is a string, the + operator will treat both operands as strings and perform string concatenation.
In this case, the first operand (num1) is a number, but the second operand (num2) is a string.
Therefore, the + operator will treat both operands as strings and perform string concatenation, resulting in the string "1020".

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