Question

which is depicted as variables​

Answer 1

Answer:

In computer programming, an assignment statement sets and/or re-sets the value stored in the storage location(s) denoted by a variable name; in other words, it copies a value into the variable. In most imperative programming languages, the assignment statement (or expression) is a fundamental construct.

Today, the most commonly used notation for this basic operation has come to be x = expr (originally Superplan 1949–51, popularized by Fortran 1957 and C) followed by[1] x := expr (originally ALGOL 1958, popularised by Pascal),[2] although there are many other notations in use. In some languages the symbol used is regarded as an operator (meaning that the assignment statement as a whole returns a value) while others define the assignment as a statement (meaning that it cannot be used in an expression).

Answer 2

$\huge\mathcal\colorbox{yellow}{{\color{blue}{AnSwEr~↓~↓~}}}$

Known variables represents a fixed value, usually a number, while unknown variables represents a range or type of values (e.g. a non-negative integer). Some common constants that can only be approximately represented by a real number, such as pi and e, are special known variables.