Question
$(p \leftrightarrow q)\ \&\ \sim (p \leftrightarrow q)$
| $1$ | $2$ | $3$ | $4$ | $5$ | |
| $p$ | $q$ | $p \leftrightarrow q$ | $\sim (p \leftrightarrow q)$ | $(p \leftrightarrow q)\ \&\ \sim (p \leftrightarrow q)$ | |
| $1$ | $T$ | $T$ | $T$ | $F$ | $F$ |
| $2$ | $T$ | $F$ | $F$ | $T$ | $F$ |
| $3$ | $F$ | $T$ | $F$ | $T$ | $F$ |
| $4$ | $F$ | $F$ | $T$ | $F$ | $F$ |
| $1, 2( \leftrightarrow )$ | $3(\sim )$ | $3, 4 (\&)$ | |||
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| $A \rightarrow J$ |
| $B \rightarrow R$ |
| $(A\ v\ B)\&\ \sim D$ |
| $J \rightarrow D$ |
| $\therefore (D\ v\ R)\ \&\ (B\ v\ K)$ |