Plz give correct answer without spamming☺️
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Plz give correct answer without spamming☺️
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YOUR ANSWER :–
9
A number that is a perfect square never ends in 2, 3, 7 or 8. If your number ends in any of those numbers, you can stop here because your number is not a perfect square.
Obtain the digital root of the number. The digital root essentially is the sum of all of the digits. If you're lost, don't worry, we'll go over each step in more detail below.
All possible numbers that are a perfect square have a digital root of 1, 4, 7, 9.
Let's try it,
Step 1:
What is the last number of 61,009? It is this number: 61009. The answer is 9. Is 9 in the list of numbers that are never perfect squares (2, 3, 7 or 8)?
Answer: NO, 9 is not in the list of numbers that are never perfect squares. Let's continue to the next step.
Step 2:
We now need to obtain the digital root of the number. Here's how you do it:
Split the number up and add each digit together:
6 + 1 + 0 + 0 + 9 = 16
If the answer is more than one digit, you would add each digit of the answer together again:
1 + 6 = 7
What is the digital root of number 61,009?
Answer: 7
Step 3:
So now we know the digital root of 61,009 is 7. Is 7 in the list of digital roots that are always a square root (1, 4, 7 or 9)?
Answer: YES, 7 is in the list of digital roots that are always perfect squares. We can conclude that 61,009 could be a perfect square!