# NSTSE (National Science Talent Search Exam- Unified Council) Class 4: Questions 635 - 639 of 1971

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## Question number: 635

» Mathematics » Multiplication and Division

### Question

Manali is arranging his father’s book in a new bookshelf which has 6 shelves. After putting 15 books in each shelf, she finds that 10 books are still left outside. How many books are there in total?

### Choices

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

a. | 75 | |

b. | 100 | |

c. | 108 | |

d. | 90 |

## Question number: 636

» Mathematics » Multiples and Factors

### Question

The number 14 has four factors: . The table below lists the number of factors for some numbers.

Number | Number of factors |

21 | 4 |

23 | 2 |

25 | 3 |

27 | 4 |

29 | 2 |

From this we can say that the number of composite numbers between 20 and 30 is:

### Choices

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

a. | 0 | |

b. | 3 | |

c. | 4 | |

d. | 2 |

## Question number: 637

» Mathematics » Fractions

### Question

of 12 km ________m

### Choices

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

a. | 20 | |

b. | 200 | |

c. | 2000 | |

d. | 2 |

## Question number: 638

» Mathematics » Multiplication and Division

### Question

Meera divided by 15 and obtained a quotient of 374 and remainder of 8. For this problem, which of these checks will help Meera to find her mistakes?

### Choices

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

a. | Check if quotient divisor remainder dividend | |

b. | Check his calculations of and | |

c. | Check if remainder dividend | |

d. | Check if remainder divisor |

## Question number: 639

» Mathematics » Fractions

### Question

________ m

### Choices

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

a. | 30 | |

b. | 3000 | |

c. | 300 | |

d. | 3 |