• question_answer The propositions $(p\Rightarrow \sim p)\,\wedge \,(\sim p\Rightarrow p)$ is A)  tautology and contradiction                B)  neither tautology nor contradiction C)  contradiction D)  tautology

 $p$ $\sim p$ $p\Rightarrow \sim p$ $\sim p\Rightarrow p$ $(p\Rightarrow \sim p)\,\wedge \,(\sim p\Rightarrow p)$ T F F T F F T T F F
$[0.\,{{q}^{n}}+1\cdot \,\frac{n}{1}{{q}^{n-1}}p+2\cdot \,\frac{n(n-1)}{2!}{{q}^{n-2}}{{p}^{2}}$