Question

show that 6560 is not a perfect square.
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Answer 1

What is the last number of 6,560? It is this number: 6560. ...

6 + 5 + 6 + 0 = 17. 1 + 7 = 8. ...

So now we know the digital root of 6,560 is 8.

Answer 2

6000+500+60+0

Step-by-step explanation:

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