Wednesday, October 2, 2013

number problem



What is the sum of the digits of the number x;

Where X = 102006 + 9.102002 – 2?

Answer:

       1 accompanied by 2006 zeros ----- 102006        
      9 accompanied by 2002 zeros ----- 102002      

  x = 1000899.............................................................98
                                           2001 times

sum of digits of x = 1+8+ 9.2001 + 8 = 18026 

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