Question
If Hirji laughs, Roorkee gets angry.
Roosevelt does not climb Rees.
So, Hirji laughs.
Roosevelt does not climb Rees.
So, Hirji laughs.
| Support statement | The resulting statement | |||||
| $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | |
| $P$ | $Q$ | $\sim Q$ | $P\rightarrow Q$ | $(P\rightarrow Q) \& \sim Q$ | $P$ | |
| $1$ | $T$ | $T$ | $F$ | $T$ | $F$ | $T$ |
| $2$ | $T$ | $F$ | $T$ | $F$ | $F$ | $T$ |
| $3$ | $F$ | $T$ | $F$ | $T$ | $F$ | $F$ |
| $4$ | $F$ | $F$ | $T$ | $T$ | $T^*$ | $F^*$ |
| $2 (\sim)$ | $1, 2(\rightarrow)$ | $4, 3 (\&)$ | As $1$ | |||
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