Question

variable are those whose values are___.a)known b)unknown c)none of these d)both a&b​

Answer 1

Answer:

b. unknown ( doesn't have constant value)

Answer 2

b) unknown

Variables are denoted by letters. Variables are those terms whose value we do not know. For example, let a variable be (k). We do not know its actual value. It can be any real number.

More: Constants are those terms whose value is known. For e.g., 2, π, e, 10, etc.