The sum of the series of three numbers, which includes the counting number, n, the number before n, and the number after n is 3•n
What is a series?
A series of a sequence of numbers is the sum of the numbers up to a specified term.
The given parameters;
n = A counting number
Counting numbers are the natural numbers which is the set of all positive integers.
Given that n is a counting number, we have that n is a positive whole number.
Which gives;
The whole number before n = n - 1
The whole number after n = n + 1
Which gives;
The sum of n, the whole number before n, and the whole number after n is part of a series and can be written mathematically as follows;
The sum = n + n - 1 + n + 1 = 3•n -1 + 1 = 3•n
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