Math, asked by arunasheba13, 2 months ago

the foruth triangular number is 9 true or false

Answers

Answered by pushpaspoorthi
2

Answer:

true

Step-by-step explanation:

the fourth triangle number is 9 it is true

Answered by khushivinod53
1

Step-by-step explanation:

The digital root pattern for triangular numbers, repeating every nine terms, as shown above, is "1, 3, 6, 1, 6, 3, 1, 9, 9". ... For example, the digital root of 12, which is not a triangular number, is 3 and divisible by three.

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