Individuals and Variables of Data

Which of the following is/are strings?

• 4

• 4.0

• '4'

• 3.9

What is the result of 80 + 71.2?

• 151.2

• 151

• 8071.2

• -151

What is the result of 2 + "2"?

• 4

• "4"

• 2

• 22

Does 100 + 30 produce a number or a string?

• Number

• String

Which of this are datatype?

• String

• variable

Which of this is a valid variable name in Javascript?

• 111abc

• abc111

• abc 111

• abc111!

Which of this lines show the correct way to reassign a variable to a new value?

• ironMAN=1000;

• 1000->ironMAN;

• var ironMAN=1000;

• 1000 = ironMAN;

Which of this lines of code is a valid JavaScript for defining a variable?

• var carBmw = 10;

• carBmw is 10;

• var carBmw == 10;

• var = carBmw 10;

Variable in JavaScript can hold ___ value at a time

• Multiple

• Double

• None of these

• Single

We can declare all type of variables in JavaScript with the keyword ____

• var

• obj

• jvar

• None of these