Chances are a call center will rarely receive *exactly* 1000 calls, or 1500, or 2000, ...
A more likely choice would be, for instance,
, 
, ...
A more likely choice would be, for instance,
In a class of 50 students 24 like football, 21 basketball and 18 Cricket, 6 like football and basketball, only 3 like basketball
1 answer:
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Substitution.
Here is an example.
Let x be equal to 3 and y equal to 3.
From this we can conclude that the values of both x and y are equal to three therefore x and y have the same value and are equal.
Here in your case we have:
Hope this helps.
r3t40