the foruth triangular number is 9 true or false
Answers
Answered by
2
Answer:
true
Step-by-step explanation:
the fourth triangle number is 9 it is true
Answered by
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.
Similar questions