Question

what is root square of 9999

Answer 1

Answer:

So now we know the digital root of 9,999 is 9. Is 9 in the list of digital roots that are always a square root (1, 4, 7 or 9)? Answer: YES, 9 is in the list of digital roots that are always perfect squares. We can conclude that 9,999 could be a perfect square

I hope it helps!