# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 122 - 131 of 1042

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## Question 122

## Question 123

## Question 124

### Question

MCQ▾A number is multiplied by itself and then 15 is subtracted from the product. If the final result is 2545, then find the original number.

### Choices

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

a. | 30 | |

b. | 31 | |

c. | 13 | |

d. | 32 |

## Question 125

### Question

MCQ▾The area of a square field is sq. m. The length of each side of the field is ________.

### Choices

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

a. | 2.00 | |

b. | 2.50 | |

c. | 4.00 | |

d. | 1.92 |

## Question 126

### Question

MCQ▾The number must be subtracted from 13245 to get a perfect square is________.

### Choices

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

a. | 15 | |

b. | 20 | |

c. | 11 | |

d. | 10 |

## Question 127

### Question

MCQ▾Find the smallest square number which is exactly divisible by 15,25, and 30 is, ________

### Choices

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

a. | 500 | |

b. | 180 | |

c. | 100 | |

d. | 900 |

## Question 128

## Question 129

## Question 130

### Question

MCQ▾The value of is________.

### Choices

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

a. | 2 | |

b. | ||

c. | ||

d. | Both b. and c. are correct |

## Question 131

### Question

MCQ▾The least two digit number, which is a perfect square is ________

### Choices

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

a. | 4 | |

b. | 16 | |

c. | 12 | |

d. | 9 |