Question

which are the 7th,8th and 9th triangular number?

Answer 1

5 6 79 645794975557975554536

Answer 2

Answer:

The Triangular Number Sequence is 1, 3, 6, 10, 15, 21, 28, 36, 45 and so on. It is formed by counting the dots in a triangle. From the sequence it is evident that the 8th and the 9th number is : 36 and 45.

Step-by-step explanation:

Sorry I don't know about 7th triangular

number .

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