# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 498 - 505 of 1042

Access detailed explanations (illustrated with images and videos) to **1042** questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. *Unlimited Access, Unlimited Time, on Unlimited Devices*!

View Sample Explanation or View Features.

Rs. 450.00 -OR-

How to register? Already Subscribed?

## Question 498

### Question

MCQ▾A bag contains 25 paise, 10 paise and 5 paise coins in the ratio 2: 3: 4. If their total value is ₹ 20, the number of 5 paise coins is ________.

### Choices

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

a. | 80 | |

b. | 70 | |

c. | 60 | |

d. | 50 |

## Question 499

### Question

MCQ▾If and , then is equal to________.

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 500

### Question

MCQ▾Two numbers are in the ratio 1: 3. If each number is increased by 9, the ratio becomes 3: 5. The numbers are________.

### Choices

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

a. | 4.5,13.5 | |

b. | 13,14 | |

c. | 3.5,14.7 | |

d. | 35,25 |

## Question 501

## Question 502

### Question

MCQ▾The ratio of boys and girls in a school of 660 students is . How many girls should be admitted to make ratio ?

### Choices

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

a. | 30 | |

b. | 50 | |

c. | 40 | |

d. | 60 |

## Question 503

### Question

MCQ▾can do a piece of work in 50 days. He works at it for 5 days and then alone finishes the work in 30 days. The two together could have completed the work in ________.

### Choices

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

a. | 20 days | |

b. | 17 days | |

c. | 21 days | |

d. | 18 days |

## Question 504

### Question

MCQ▾Number of prime factors in is

### Choices

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

a. | 4 | |

b. | 2 | |

c. | 6 | |

d. | 3 |

## Question 505

### Question

MCQ▾If , then the value of is________.

### Choices

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

a. | 3 | |

b. | 1 | |

c. | 2 | |

d. | 4 |