(i) $C \land S \Leftrightarrow D$
(ii) $C \Rightarrow (S \Leftrightarrow D)$
(iii) $C \Leftrightarrow ((D \Rightarrow S) \lor \neg S)$
Which of the following options is correct?
This problem involves analyzing logical statements derived from a given condition about creativity, success, and discipline.
Let the propositions be:
The core condition stated is: "A Creative ($C$) person will Succeed ($S$) if the person is also Disciplined ($D$), but will not succeed otherwise." This translates to: If a person is Creative ($C$ is True), then they Succeed ($S$) if and only if they are Disciplined ($D$). Logically, this is represented as: $C \Rightarrow (S \Leftrightarrow D)$
This core condition must hold true for any valid scenario described by the problem.
To check if this statement is always true according to the problem's condition, let's consider a case where the core condition $C \Rightarrow (S \Leftrightarrow D)$ holds, but statement (i) might not.
Consider a scenario where the person is not creative ($C$ is False) but is disciplined ($D$ is True) and succeeds ($S$ is True).
Since we found a valid scenario where statement (i) is False, statement (i) is not always true. Statement (i) is FALSE.
This statement is the direct logical translation of the problem's core condition ("A Creative ($C$) person will Succeed ($S$) if the person is also Disciplined ($D$), but will not succeed otherwise").
Therefore, statement (ii) must be TRUE based on the problem's definition.
Let's simplify the right side of the equivalence: $(D \Rightarrow S) \lor \neg S$. Using the logical equivalence $P \Rightarrow Q \equiv \neg P \lor Q$, we get:
So, statement (iii) simplifies to $C \Leftrightarrow T$, which means $C$ must always be True.
However, the problem does not state that only creative people exist or are considered. A person can be not creative ($C$ is False).
Let's use the scenario from statement (i) analysis: $C=F, D=T, S=T$. The core condition holds.
Since we found a valid scenario where statement (iii) is False, statement (iii) is not always true. Statement (iii) is FALSE.
Based on the analysis:
Therefore, only statement (ii) is TRUE.
Let $p$ and $q$ be any two propositions. Consider the following propositional statements.
$S_1: p \to q$ $S_2: \neg p \land q$ $S_3: \neg p \lor q$ $S_4 : \neg p \lor \neg q$
where $\land$ denotes conjunction (AND operation), $\lor$ denotes disjunction (OR operation), and $\neg$ denotes negation (NOT operation). Which one of the following options is correct?
(Note: $\equiv$ denotes logical equivalence)
Which of the following logical implications are tautology?
A. $[\sim p \land (p \lor q)] \rightarrow q$
B. $\sim p \rightarrow (p \rightarrow q)$
C. $[p \land (p \rightarrow q)] \rightarrow q$
D. $\sim (p \rightarrow q) \rightarrow q$
Choose the correct answer from the options given below: