Question

State which reason 5555 can not be a perfect square

Answer 1

Answer:

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Step-by-step explanation:

Let's try it...

Step 1:

What is the last number of 5,555? It is this number: 5555. The answer is 5. Is 5 in the list of numbers that are never perfect squares (2, 3, 7 or 8)?

Answer: NO, 5 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:

5 + 5 + 5 + 5 = 20

If the answer is more than one digit, you would add each digit of the answer together again:

2 + 0 = 2

What is the digital root of number 5,555?

Answer: 2

Step 3:

So now we know the digital root of 5,555 is 2. Is 2 in the list of digital roots that are always a square root (1, 4, 7 or 9)?

Answer: NO, 2 is not in the list of digital roots that are always perfect squares. We can conclude that 5,555 IS NOT a perfect square and we don't need to factor!