Menu
Start Here
Our Story
Hire a Tutor
Upgrade to Math Mastery
8thtriangularnumber
<-- Enter triangular number statement
Calculate triangular number 8
The formula for triangular number n is as follows
T
n
=
n(n + 1)
2
Given n = 8, we have:
T
8
=
8(8 + 1)
2
T
8
=
8(9)
2
T
8
=
72
2
T
8
=
36
Run Another Calculation