Explanation The Word Variable means something which can change.
Many times, we experience some events/situation whose values are different, like number of days in a month, height of persons, length of roads, etc.
In Algebra, to represent such values we attach a symbols to them.
For Example length and breadth of a rectangle is represented as l and b respectively.
Here, l and b doesn't carry any particular values and so they are called Variables
The Value of a Variable is not fixed. Variable can have different values in different situations.
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