MCQ
Which of the following statement is contingency?
- A$(p \vee q) \vee \sim q$
- B$(p \vee q) \vee \sim p$
- ✓$(p \vee q) \wedge \sim q$
- D$p \rightarrow(p \vee q)$
| $p$ | $q$ | $p \rightarrow(p \vee q)$ | ||||||
| $T$ | $T$ | $F$ | $F$ | $T$ | $T$ | $T$ | $F$ | $T$ |
| $T$ | $F$ | $F$ | $T$ | $T$ | $T$ | $T$ | $T$ | $T$ |
| $F$ | $T$ | $T$ | $F$ | $T$ | $T$ | $T$ | $F$ | $T$ |
| $F$ | $F$ | $T$ | $T$ | $F$ | $T$ | $T$ | $F$ | $T$ |
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$\bar{r} \cdot(2 \bar{i}+\bar{j}-3 \bar{k})+7=0$ is