# Discrete Mathematics-Number System [NTA-NET (Based on NTA-UGC) Computer Science (Paper-II)]: Questions 1 - 5 of 19

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## Question number: 1

» Discrete Mathematics » Number System

Appeared in Year: 2015

### Question

Which of the following is/are not true?

(1) The set of negative integers is countable.

(2) The set of integers that are multiples of 7 is countable.

(3) The set of even integers is countable.

(4) The set of real numbers between 0 and ^{1}/_{2} is countable. (December)

### Choices

Choice (4) | Response | |
---|---|---|

a. | (1) and (3) | |

b. | (2) and (4) | |

c. | (4) only | |

d. | (2) only |

## Question number: 2

» Discrete Mathematics » Number System

Appeared in Year: 2016

### Question

The IEEE-754 double-precision format to represent floating point numbers, has a length of ………. bits.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 16 | |

b. | 64 | |

c. | 48 | |

d. | 32 |

## Question number: 3

» Discrete Mathematics » Number System

Appeared in Year: 2010

### Question

The number of integers between 1 and 250 that are divisible by 2,5 and 7 is (Paper II)

### Choices

Choice (4) | Response | |
---|---|---|

a. | 2 | |

b. | 5 | |

c. | 8 | |

d. | 3 |

## Question number: 4

» Discrete Mathematics » Number System

Appeared in Year: 2010

### Question

Consider the following left associative operators in decreasing order of precedence:

– subtraction (highest precedence)

* multiplication

$ exponentiation (lowest precedence)

What is the result of the following expression?

(June Paper II)

### Choices

Choice (4) | Response | |
---|---|---|

a. | – 61 | |

b. | 64 | |

c. | 512 | |

d. | 4096 |

## Question number: 5

» Discrete Mathematics » Number System

Appeared in Year: 2011

### Question

Any integer composed of 3n identical digits divisible by (June Paper 2)

### Choices

Choice (4) | Response | |
---|---|---|

a. | 2n | |

b. | 3n | |

c. | 5n | |

d. | 7n |