10thnonagonalnumber

<-- Enter nonagonal number statement
  

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Calculate nonagonal number 10

The formula for nonagonal number n is as follows

Nn  =	n(7n - 5)
	2

Given n = 10, we have:

N10  =	10(7(10) - 5)
	2

N10  =	10(70 - 5)
	2

N10  =	10(65)
	2

N10  =	650
	2

N₁₀ = 325

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