Free practice · single-choice · medium

Practice

Apply a fictional approval rule

Northstar's training rule says every approved refund record includes a supervisor code. Refund A is approved. What is guaranteed?

Deduction chain

Preserve direction from premises to conclusion

  1. PremisesSeparate facts and rules
  2. DirectionMark if, only, all, and some
  3. ConnectLink matching terms
  4. ChallengeTry a counterexample
  5. ConcludeState only what is guaranteed

A guaranteed conclusion follows only when stated facts activate rules in their written direction and no counterexample survives.

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