# Mathematics-Factors and Multiples (NSTSE Class 5): Questions 17 - 24 of 84

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## Question number: 17

» Mathematics » Factors and Multiples

### Question

How many prime numbers are there from 1 to 50?

### Choices

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

a. | 17 | |

b. | 20 | |

c. | 15 | |

d. | 10 |

## Question number: 18

» Mathematics » Factors and Multiples

### Question

The figure given shows 5 numbers. (Model Test Paper)

Which of the 5 numbers are the prime factors of 130?

### Choices

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

a. | 3 and 10 | |

b. | 2 and 3 | |

c. | 10 and 13 | |

d. | 2 and 13 |

## Question number: 19

» Mathematics » Factors and Multiples

### Question

Identify an example for twin primes.

### Choices

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

a. | 5, 9 | |

b. |
| |

c. | 21, 25 | |

d. | 13, 15 |

## Question number: 20

» Mathematics » Factors and Multiples

### Question

Which of the following numbers which have no common factor except 1?

### Choices

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

a. | Twin primes | |

b. | Co-primes | |

c. | Composite numbers | |

d. | None of the above |

## Question number: 21

» Mathematics » Factors and Multiples

### Question

How many prime numbers are there from 1 to 100?

### Choices

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

a. | 27 | |

b. | 20 | |

c. | 15 | |

d. | 25 |

## Question number: 22

» Mathematics » Factors and Multiples

### Question

Study the numbers given in the box.

Identify the number that is not a divisor of the given numbers.

### Choices

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

a. | 39 | |

b. | 14 | |

c. | 26 | |

d. | 13 |

## Question number: 23

» Mathematics » Factors and Multiples

### Question

How many times the H. C. F. of and 77 is their L. C. M. ?

### Choices

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

a. | 44 | |

b. | 3630 | |

c. | 11 | |

d. | 24 |

## Question number: 24

» Mathematics » Factors and Multiples

### Question

Which of the following are multiples of 2?

### Choices

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

a. | Composite number | |

b. | Odd number | |

c. | Prime number | |

d. | Even number |