## Objective Questions

*Question*

The conjunction p and q is True when _________.

- p is True, q is False
- p is False, q is True
- p is True, q is True
- p is False, q is False

Answer: 3 | Chapter No. 1 |

*Question*

If p is false and q is false, then ~p implies q is ________.

- True
- False

Answer: 2 | Chapter No. 3 |

*Question*

The converse of the conditional statement 'If I live in Quetta, then I live in Pakistan' is ________.

- If I live in Pakistan, then I live in Quetta.
- If I live in Pakistan, then I do Not live in Quetta.
- If I do Not live in Quetta, then I do Not live in Pakistan
- If I do Not live in Quetta, then I live in Pakistan

Answer: 1 | Chapter No. 3 |

*Question*

~(P --> q) is logically equivalent to _________.

- p AND ~ q
- p OR ~q
- ~p AND q
- ~p OR q

Answer: 1 | Chapter No. 3 |

*Question*

If p <--> q is True, then ________.

- Only p is True.
- Only q is True.
- p and q both are True.
- None of the given.

Answer: 3 | Chapter No. 4 |

*Question*

The switches in parallel act just like ________.

- NOT gate
- AND gate
- OR gate
- XOR gate

Answer: 3 | Chapter No. 5 |

*Question*

Let A={2,3,5,7} B={2,3,5,7,2} c=set of first five prime numbers. Then from the following which statement is true ?

- A=B
- A=C
- B=C
- All the three sets are equal.

Answer: 1 | Chapter No. 7 |

*Question*

If A=set of students of virtual university then A has been written in the _________.

- Tabular form
- Set builder form
- Descriptive form
- A is not a set

Answer: 3 | Chapter No. 7 |

*Question*

If A And B are any two sets, then A-B= B-A

- True
- False

Answer: 2 | Chapter No. 8 |

*Question*

x belongs to A or x belongs to B, therefore x belongs to ________.

- A intersection B
- A union B
- A difference B
- A symmetric difference B

Answer: 2 | Chapter No. 8 |

*Question*

Range of the relation {(0,1),(3,22),(90,34)} is __________ .

- {0,3,90}
- {1,22,34}
- {0,1,3}
- {0,1,3,22,90,34}

Answer: 2 | Chapter No. 11 |

*Question*

Which of the followings is the product set A * B * C ? where A = {a}, B = {b}, and C = {c, d}.

- {(a, b, c), (a, b, d)}
- {(a, c, b), (a, d, b)}
- {(b, c, a), (b, d, a)}
- {(c, b, a), (d, b, a)}

Answer: 1 | Chapter No. 11 |

*Question*

Let R be the universal relation on a set A then which one of the following statement about R is true?

- R is not symmetric
- R is not reflexive
- R is not transitive
- R is reflexive, symmetric and transitive.

Answer: 4 | Chapter No. 12 |

*Question*

Let R be the universal relation on a set A then which one of the following statement about R is true?

- R is not symmetric
- R is not reflexive
- R is not transitive
- R is reflexive, symmetric and transitive.

Answer: 4 | Chapter No. 12 |

*Question*

Let R be a relation on a set A. If R is symmetric then its compliment is __________.

- Reflexive
- Irreflexive
- Symmetric
- Antisymmetric

Answer: 2 | Chapter No. 14 |

*Question*

Let R be a relation on a set A. If R is reflexive then its compliment is ____________.

- Reflexive
- Irreflexive
- Symmetric
- Antisymmetric

Answer: 2 | Chapter No. 14 |

*Question*

Let A={1,2,3} and B = {2,4}then number of functions from A to B are _________.

- 6
- 8
- 16
- 64

Answer: 2 | Chapter No. 15 |

*Question*

Let X = {2,4,5} and Y={1,2,4 }and R be a relation from X to Y defined by R = {(2,4), (4,1), (a,2)}. For what value of ‘a ‘ the relation R is a function ?

- 1
- 2
- 4
- 5

Answer: 4 | Chapter No. 15 |

*Question*

Let A = { 1,2,3,4} and B ={ 7 } then the constant function from A to B is _________ .

- Onto
- One to one
- Both one to one and onto
- Neither one to one nor onto

Answer: 1 | Chapter No. 16 |

*Question*

Let f(x)=3x and g(x)=3x-2 define functions f and g from R to R. Then (f+g)(x)= _________.

- -2
- 6x+2
- 6x-2
- 6x.x-2

Answer: 3 | Chapter No. 18 |

*Question*

The total number of terms in an arithmetic series 0 + 5 + 10 + 15 + .... + 50 are ________.

- 9
- 10
- 11
- infinite

Answer: 3 | Chapter No. 20 |