# Number System (IMO- Mathematics Olympiad Class 7): Questions 38 - 44 of 81

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to **965** questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

## Question number: 38

» Number System

### Question

A gardener plans to plant 630 trees in 21 rows each containing the same number of trees, then how many trees will there be in each row?

### Choices

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

a. | 3 | |

b. | 21 | |

c. | 30 | |

d. | 300 |

## Question number: 39

» Number System

### Question

The sign of the product of one positive integer and one negative integer is________.

### Choices

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

a. | Negative | |

b. | Cannot be determined | |

c. | Positive or Negative | |

d. | Positive |

## Question number: 40

» Number System

### Question

What will be the sign of the product if we together multiply 200 negative integers and 12 positive integers?

### Choices

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

a. | Negative | |

b. | Data is insufficient | |

c. | Positive | |

d. | Can’t say |

## Question number: 41

» Number System

### Question

What will be the sign of the product if we together multiply 199 negative integers and 10 positive integers?

### Choices

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

a. | Negative | |

b. | Data is insufficient | |

c. | Positive | |

d. | Can’t say |

## Question number: 42

» Number System

### Question

The value of X in , is________.

### Choices

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

a. |
| |

b. |
| |

c. | 3 | |

d. | 2 |

## Question number: 43

» Number System

### Question

The value of is________.

### Choices

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

a. | 4 | |

b. | 2 | |

c. | 1 | |

d. | 3 |

## Question number: 44

» Number System

### Question

The difference of the sum of even numbers and sum of odd numbers between 1 and 10 is________.

### Choices

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

a. | 3 | |

b. | 5 | |

c. | 4 | |

d. | 6 |