# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 567 - 575 of 931

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## Question 567

### Question

MCQ▾Which color is opposite to yellow?

### Choices

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

a. | Purple | |

b. | Violet | |

c. | Blue | |

d. | Red |

## Question 568

### Question

MCQ▾In the number 5904627813 first and sixth digits are interchanged; and similarly the positions of second and seventh digits and so on are interchanged. Which of the following will be the 4^{th} digit from the right after the new arrangement?

### Choices

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

a. | 1 | |

b. | 0 | |

c. | 4 | |

d. | 9 |

## Question 569

## Question 570

### Question

MCQ▾If , then the value of x is________.

### Choices

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

a. | 2 | |

b. | 6 | |

c. | 4 | |

d. | 8 |

## Question 571

## Question 572

### Question

MCQ▾The difference between a discount of on ₹ 1000 and two successive discounts of on the same amount is ________

### Choices

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

a. | ₹ 22 | |

b. | ₹ 17.20 | |

c. | ₹ 18.40 | |

d. | ₹ 14.56 |

## Question 573

## Question 574

### Question

MCQ▾Find the remainder when is divided by .

### Choices

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

a. | 3 | |

b. | -3 | |

c. | 2 | |

d. | -2 |

## Question 575

### Question

MCQ▾If the mean of 20 observations is 25 and that of another 5 observations is 14, then the mean of 25 observations is ________

### Choices

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

a. | 15 | |

b. | 22 | |

c. | 22.8 | |

d. | 15.5 |