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8thnonagonalnumber
<-- Enter nonagonal number statement
Calculate nonagonal number 8
The formula for nonagonal number n is as follows
N
n
=
n(7n - 5)
2
Given n = 8, we have:
N
8
=
8(7(8) - 5)
2
N
8
=
8(56 - 5)
2
N
8
=
8(51)
2
N
8
=
408
2
N
8
=
204
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