# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 278 - 285 of 1040

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## Question number: 278

» Quadrilaterals and Practical Geometry

### Question

The number of sides of a regular polygon whose each exterior angle has a measure of is________.

### Choices

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

a. | 10 | |

b. | 8 | |

c. | 6 | |

d. | 3 |

## Question number: 279

### Question

Sugar is bought at Rs. 15.00 per kg and sold at Rs. 14.00 per kg. The loss percent is________.

### Choices

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

a. | 3.00% | |

b. | 3.12% | |

c. | 6.66% | |

d. | 6.00% |

## Question number: 280

» Quadrilaterals and Practical Geometry

### Question

Four angles of a quadrilateral are in the ratio 4: 8: 16: 32. The greatest angle is________.

### Choices

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

a. | 144 | |

b. | 120 | |

c. | 150 | |

d. | 192 |

## Question number: 281

» Quadrilaterals and Practical Geometry

### Question

The exterior angle of a regular polygon is one-half of its interior angle. How many sides has the polygon?

### Choices

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

a. | 5 | |

b. | 6 | |

c. | 8 | |

d. | 4 |

## Question number: 282

» Quadrilaterals and Practical Geometry

### Question

Sum of the exterior angle of quadrilateral is________.

### Choices

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

a. | 360 | |

b. | 120 | |

c. | 450 | |

d. | 180 |

## Question number: 283

### Question

The simple interest at y % for y years will be Rs. y on a sum of________.

### Choices

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

a. | Rs. | |

b. | Rs. | |

c. | Rs. | |

d. | Rs. |

## Question number: 284

### Question

The simple interest at a % for a years will be Rs. 2a on a sum of________.

### Choices

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

a. | Rs. | |

b. | Rs. | |

c. | Rs. | |

d. | Rs. |

## Question number: 285

» Quadrilaterals and Practical Geometry

### Question

The exterior angle of a regular polygon is one-fifth of its interior angle. How many sides has the polygon?

### Choices

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

a. | 4 | |

b. | 10 | |

c. | 8 | |

d. | 12 |