Home
Class 12
MATHS
Write 'T' for True and 'F' for False. ...

Write 'T' for True and 'F' for False.
`(p vv q) ^^ q = p`.

Text Solution

AI Generated Solution

The correct Answer is:
To determine the truth value of the expression \((p \lor q) \land q = p\), we will construct a truth table and analyze the results step by step. ### Step 1: Define the Variables Let \(p\) and \(q\) be two logical variables that can take values True (T) or False (F). ### Step 2: Construct the Truth Table We will create a truth table with the following columns: 1. \(p\) 2. \(q\) 3. \(p \lor q\) (disjunction) 4. \((p \lor q) \land q\) (conjunction) 5. Compare \((p \lor q) \land q\) with \(p\) The truth table will have four rows corresponding to all combinations of truth values for \(p\) and \(q\). | \(p\) | \(q\) | \(p \lor q\) | \((p \lor q) \land q\) | \((p \lor q) \land q = p\) | |-------|-------|---------------|--------------------------|------------------------------| | T | T | T | T | T | | T | F | T | F | F | | F | T | T | T | F | | F | F | F | F | T | ### Step 3: Fill in the Truth Values - For \(p = T\) and \(q = T\): - \(p \lor q = T\) (since at least one is true) - \((p \lor q) \land q = T \land T = T\) - \(T = T\) (True) - For \(p = T\) and \(q = F\): - \(p \lor q = T\) - \((p \lor q) \land q = T \land F = F\) - \(F = T\) (False) - For \(p = F\) and \(q = T\): - \(p \lor q = T\) - \((p \lor q) \land q = T \land T = T\) - \(T = F\) (False) - For \(p = F\) and \(q = F\): - \(p \lor q = F\) - \((p \lor q) \land q = F \land F = F\) - \(F = F\) (True) ### Step 4: Analyze the Results Now we compare the last column with the column for \(p\): - For \(p = T\) and \(q = T\): True - For \(p = T\) and \(q = F\): False - For \(p = F\) and \(q = T\): False - For \(p = F\) and \(q = F\): True The results show that \((p \lor q) \land q\) is not equivalent to \(p\) for all combinations of truth values. Therefore, the statement \((p \lor q) \land q = p\) is **False**. ### Final Answer The truth value of the expression \((p \lor q) \land q = p\) is **F** (False). ---
Promotional Banner

Topper's Solved these Questions

  • MATHEMATICAL REASONING

    ML KHANNA|Exercise PROBLEM SET (2)|15 Videos
  • MATHEMATICAL REASONING

    ML KHANNA|Exercise PROBLEM SET (2) ASSERTION/REASON|3 Videos
  • MATHEMATICAL REASONING

    ML KHANNA|Exercise PROBLEM SET (1)(FILL IN THE BLANKS)|22 Videos
  • LOGARITHMS AND SURDS

    ML KHANNA|Exercise Miscellaneous exercise|3 Videos
  • MATRICES

    ML KHANNA|Exercise COMPREHENSION|3 Videos
ML KHANNA-MATHEMATICAL REASONING-PROBLEM SET (1)(TRUE OR FALSE)
  1. Write 'T' for True and 'F' for False. A statement is not a declarati...

    Text Solution

    |

  2. Write 'T' for True and 'F' for False. The equation of 4x +2=6 is an...

    Text Solution

    |

  3. Write 'T' for True and 'F' for False. p unless q means ~| q implies ...

    Text Solution

    |

  4. Write 'T' for True and 'F' for False. "If you read" then you will p...

    Text Solution

    |

  5. Write 'T' for True and 'F' for False. ~| (p implies q)=p ^^ ~| q.

    Text Solution

    |

  6. Write 'T' for True and 'F' for False. (p vv q) ^^ q = p.

    Text Solution

    |

  7. Write 'T' for True and 'F' for False. (p vv q) ^^ p =p is an absorpt...

    Text Solution

    |

  8. Write 'T' for True and 'F' for False. (p hArr q) hArr (p implies q) ...

    Text Solution

    |

  9. Write 'T' for True and 'F' for False. If p is false and q is true, ...

    Text Solution

    |

  10. Write 'T' for True and 'F' for False. Always true statement is calle...

    Text Solution

    |

  11. Write 'T' for True and 'F' for False. 1 stands for true and 0 stands...

    Text Solution

    |

  12. Write 'T' for True and 'F' for False. If (p ^^ q) implies r in this ...

    Text Solution

    |

  13. Write 'T' for True and 'F' for False. If p -= q, then p hArr q will ...

    Text Solution

    |

  14. Write 'T' for True and 'F' for False. p vv (q ^^ r) -= (p vv q) ^^ (...

    Text Solution

    |

  15. Write 'T' for True and 'F' for False. ~| (p hArr q) -= p hArr ~| q -...

    Text Solution

    |

  16. Write 'T' for True and 'F' for False. (p implies q) vv (r implies p)...

    Text Solution

    |

  17. Write 'T' for True and 'F' for False. (p vv q) ^^ r is a dual of (p ...

    Text Solution

    |

  18. Write 'T' for True and 'F' for False. (p ^^ q) implies q is not taut...

    Text Solution

    |

  19. Write 'T' for True and 'F' for False. ~| (p implies q) vv r is a dua...

    Text Solution

    |

  20. Write 'T' for True and 'F' for False. p ^^ (p implies q) = q is unde...

    Text Solution

    |