Use of applied mathematics during hiring process for developers

What qualities does this task helps to demonstrate?

  1. attention to detail? none, really. basic division, subtraction and counting digits.
  2. -
  3. Quick mental basic math operations
  4. same as above + how fast you are
  5. accuraccy
  6. Mental calculation :)
  7. Analytical skills
  8. Patterns in multiplication?
  9. arithmetic