1stnonagonalnumber

<-- Enter nonagonal number statement
  

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Calculate nonagonal number 1

The formula for nonagonal number n is as follows

Nn  =	n(7n - 5)
	2

Given n = 1, we have:

N1  =	1(7(1) - 5)
	2

N1  =	1(7 - 5)
	2

N1  =	1(2)
	2

N1  =	2
	2

N₁ = 1

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