# NSTSE (National Science Talent Search Exam- Unified Council) Class 4: Questions 709 - 717 of 1971

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## Question 709

### Question

MCQ▾What is the sum of the least common multiple and highest common factor of the numbers 12 and 18?

### Choices

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

a. | 38 | |

b. | 44 | |

c. | 42 | |

d. | 40 |

## Question 710

## Question 711

### Question

MCQ▾________

### Choices

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

a. | 1 | |

b. | 0 | |

c. | 92 | |

d. | 29 |

## Question 712

### Question

MCQ▾Number 1 has only one factor. It is neither prime nor composite. It is called ________ number.

### Choices

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

a. | Prime | |

b. | Unique | |

c. | Composite | |

d. | Twin prime |

## Question 713

### Question

MCQ▾Factors of 57: 3 and ________.

### Choices

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

a. | 23 | |

b. | 57 | |

c. | 19 | |

d. | 34 |

## Question 714

### Question

MCQ▾If we start subtracting 6 from 26 stepwise as shown, we will be able to subtract 4 times.

(The above process stops here as 5 is smaller than 6)

If we start subtracting 8 from 198 in a similar manner, how many times will we be able to subtract?

### Choices

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

a. | 43 | |

b. | 45 | |

c. | 24 | |

d. | 22 |

## Question 715

### Question

MCQ▾The value of is:

### Choices

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

a. | 37 | |

b. | 42 | |

c. | 32 | |

d. | 35 |

## Question 716

## Question 717

### Question

MCQ▾Students have 420 books. If each student has equal number of books, how many books did each student has?

### Choices

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

a. | 40 | |

b. | 35 | |

c. | 30 | |

d. | 45 |