# Number Systems (IMO- Mathematics Olympiad Class 6): Questions 45 - 51 of 82

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to **912** questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 350.00 or

## Question number: 45

» Number Systems

### Question

There are 378 red cards in box. A boy takes out 9 red cards from it and replaces them by 14 blue cards. He continues to do so, till all red cards are replaced by blue cards. Find the number of blue cards put in the box?

### Choices

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

a. | 438 | |

b. | 658 | |

c. | 588 | |

d. | 348 |

## Question number: 46

» Number Systems

### Question

Cube of any negative integer is

### Choices

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

a. | 0 | |

b. | Negative | |

c. | Depend on the nature of integer | |

d. | Positive |

## Question number: 47

» Number Systems

### Question

If positive sign precedes a bracket the sign of the terms inside the bracket will ________ when the bracket is removed.

### Choices

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

a. | Change | |

b. | Be 0 | |

c. | Depends on the bracket | |

d. | Not change |

## Question number: 48

» Number Systems

### Question

If a, b and c are whole numbers such that a = b and c 0 and c > 0, then

### Choices

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

a. |
| |

b. |
| |

c. |
| |

d. | None of the above |

## Question number: 49

» Number Systems

### Question

Product of two integers is -96. If one of the integers is -8, then the other is

### Choices

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

a. | 12 | |

b. | - 14 | |

c. | 0 | |

d. | 15 |

## Question number: 50

» Number Systems

### Question

The integer which is 7 more than is

### Choices

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

a. | 2 | |

b. | 4 | |

c. |
| |

d. | 16 |

## Question number: 51

» Number Systems

### Question

Rohan’s monthly salary is Rs. 18000. He spends Rs. 2050 for his home expenses, Rs. 1590 for purchasing clothes, Rs. 870 for purchasing groceries, milk, etc. , Rs. 1900 for purchasing medicine and pays a rent of Rs. 4500 in a particular month. How much does he save in this month?

### Choices

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

a. | Rs. 7090 | |

b. | Rs. 8609 | |

c. | Rs. 7050 | |

d. | Rs. 6870 |