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SASMO 2016 Secondary 2 (Grade 8) Contest Question 1

SASMO · SASMO 2016 Secondary 2 (Grade 8) Contest

Question 1

Find the following sum: 9 x 1+99x2+999x3+49999x4
A, 11010

Question illustration
  1. 11010
  2. 10110
  3. 11001
  4. 10011
  5. None of the above