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S.o.d . of s.o.d ,,, (Posted on 2012-02-21) Difficulty: 2 of 5
Given a 2011 digit number, divisible by 9.
Let x be the sum of its digits and y the sum of the digits of x.

Find z, sum of the digits of y .

See The Solution Submitted by Ady TZIDON    
Rating: 4.0000 (2 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionDigitMath Man2012-03-02 20:48:59
Some Thoughtsmaximum value of ySteve Herman2012-02-21 18:06:21
SolutionanswerDej Mar2012-02-21 12:16:20
SolutionJer2012-02-21 12:12:24
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