# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 854 - 861 of 931

Access detailed explanations (illustrated with images and videos) to **931** 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 854

## Question 855

### Question

MCQ▾A and B invest in a business in the ratio. If of the total profit goes to charity and A’s share is Rs. 855, the total profit is ________

### Choices

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

a. | Rs. 1500 | |

b. | Rs. 1537.50 | |

c. | Rs. 1425 | |

d. | Rs. 1576 |

## Question 856

### Question

MCQ▾If the mean of 17 observations is 22 and that of another 18 observations is 10, then the mean of 35 observations is ________

### Choices

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

a. | 24.8 | |

b. | 15 | |

c. | 15.83 | |

d. | 24 |

## Question 857

### Question

MCQ▾The ratio of two supplementary angles is , What is the measure of the greater angle?

### Choices

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

a. | 100˚ | |

b. | 160˚ | |

c. | 140˚ | |

d. | 120˚ |

## Question 858

### Question

MCQ▾Two dice are thrown simultaneously. The probability of getting an even number as the sum is________

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 859

### Question

MCQ▾The median of the following numbers 45,36,88,65,44,21,85,47,74 is________

### Choices

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

a. | 54 | |

b. | 74 | |

c. | 47 | |

d. | 88 |

## Question 860

## Question 861

### Question

MCQ▾A 150 metres long train crosses a man walking at the speed of 6 km/hr in the opposite direction in 6 seconds. The speed of the train in km/hr is ________

### Choices

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

a. | 66 | |

b. | 96 | |

c. | 84 | |

d. | 106 |