What is the square root of 8, 7 and 6

What is the square root of 8, 7 and 6

√8 ~ 2.828

√7 ~ 2.646

√6 ~ 2.449

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A NEW YEARS PRESENT FOR YOU

Ask someone to write a number, say a five-digit number.
(Can be a 2-digit.....3-digit.....4-digit....ect..…
Suppose the number written is
57836

Now, without showing the asker, you write a number on
a sheet of paper and keep it folded. You have to write the
number by subtracting 2 from the above number and
adding 2 in front which will be....
257834

Next, ask the person to write another five-digit number
below his original number. Suppose he writes 37589.
So you now have...

57836
37589

Now you write a five-digit number below it in such a
way that each digit is 9 minus digit above. You now have...

57836
37589
62410

Ask the person to add one more 5-digit number. If he
adds 54732, you add below it 45267. Note that you decided
the number by subtracting each of his digit from 9.
Thus, you now have.....

57836
37589
62410
54732
45267

Next, ask him to add all the number and he gets 257834

Show him the number which you had written as an answer
to this addition earlier in the folded paper and surprise him.

Square root of 8: 2.82842712
7: 2.64575131
6: 2.44948974