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NEST2019MathematicsSequences and Series

Let s(n) be the sum of digits of a positive integer n . Then the number of solutions of the equation n+s(n)+s(s(n))=2019 with n 2000 is

Options

  1. A4
  2. B2
  3. C19
  4. D3

Correct answer

D. 3

Step-by-step solution

No solution available.

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