#### Question

Examine whether the following statement pattern is tautology, contradiction or contingency :

p ∨ – (p ∧ q)

#### Solution

We make the truth table as follows

P | q | P ∧ q | – (P ∧ q) | Pv – (P ∧ q) |

T | T | T | F | T |

T | F | F | T | T |

F | T | F | T | T |

F | F | F | T | T |

So the final statement is always true. So it is a

tautology.

Is there an error in this question or solution?

#### APPEARS IN

Solution Examine Whether the Following Statement Pattern is Tautology, Contradiction Or Contingency : P ∨ – (P ∧ Q) Concept: Regression Coefficient of X on Y and Y on X.