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Consider following two rules $\text{R1}$ and  $\text{R2}$ in logical reasoning in Artificial Intelligence (AI):

$\text{R1}:$ From $\alpha \supset \beta \; \frac{\text{and}\; \alpha}{\text{Inter} \; \beta }$ is known as Modulus Tollens (MT)

$\text{R2}:$ From $\alpha \supset \beta\frac{\text{and}\; \neg \beta }{\text{Inter}\; \neg \alpha}$ is known as Modus Ponens(MP)

1. Only $\text{R1}$ is correct.
2. Only $\text{R2}$ is correct.
3. Both $\text{R1}$ and $\text{R2}$ are correct.
4. Neither $\text{R1}$ nor $\text{R2}$ is correct.

$Ans$ $D$. $Neither\ R1\ nor\ R2\ is\ correct$

$R1$ holds the correct definition for Modes ponens and $R2$ holds the correct definition of Modes Tollens.

### 1 comment

@Debasmita Bhoumik yes u r correct.

correct option is D.

both are written vice versa so ans is D

Ans D.

R1 holds the correct definition for Modes ponens and R2 holds the correct definition of Modes Tollens.