Menu
Start Here
Our Story
Hire a Tutor
Upgrade to Math Mastery
3rdnonagonalnumber
<-- Enter nonagonal number statement
Calculate nonagonal number 3
The formula for nonagonal number n is as follows
N
n
=
n(7n - 5)
2
Given n = 3, we have:
N
3
=
3(7(3) - 5)
2
N
3
=
3(21 - 5)
2
N
3
=
3(16)
2
N
3
=
48
2
N
3
=
24
Run Another Calculation