answersLogoWhite

0

A number, t, is a triangular number if [-1 + sqrt(1+8t)]/2 is an integer.That is equivalent to the requirement that 1+8t is the square of an odd integer.

User Avatar

Wiki User

10y ago

Still curious? Ask our experts.

Chat with our AI personalities

CoachCoach
Success isn't just about winning—it's about vision, patience, and playing the long game.
Chat with Coach
TaigaTaiga
Every great hero faces trials, and you—yes, YOU—are no exception!
Chat with Taiga
LaoLao
The path is yours to walk; I am only here to hold up a mirror.
Chat with Lao

Add your answer:

Earn +20 pts
Q: How do you know if a number is triangular?
Write your answer...
Submit
Still have questions?
magnify glass
imp