Question

What is triangular number? ​

Answer 1

Step-by-step explanation:

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

Step-by-step explanation:

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