SOLUTION: find the sum of the digits of x if x =3333333334^2
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Question 536871: find the sum of the digits of x if x =3333333334^2
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
We have 
. Then,
^2 = \frac{10^{20} - 2*10^{10} + 1}{9})
. Try visualizing what this number would look like if you were to write it out, then find the sum of the digits.
Alternatively, you could find x^2 for x = 34, 334, etc. and try to find a pattern.
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