Start free trial
Take Naologic for a spin today, no credit card needed and no obligations.
Start free trial

Modus Tollens - What is the modus tollens a and b?


"If A is true, then B is true" is the operating principle of Modus Tollens. Option B is false. This proves that A is false. Denying the consequent (B) in order to reject the antecedent (A) is a logical argument.