Question

What is Triangular number​

Answer 1

Answer:

Triangular number are any of the series of numbers (1, 3, 6, 10, 15, etc.) obtained by continued summation of the natural numbers 1, 2, 3, 4, 5, etc.

Answer 2

Answer:

any of the pattern or series of the natural numbers obtained by continued summation is called triangular number

example:

(3,6,9,12,15...)

(1,2,3,4,5,6...)