# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 171 - 180 of 1042

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## Question 171

## Question 172

### Question

MCQ▾If = 5, then = ________.

### Choices

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

a. | 100 | |

b. | 400 | |

c. | 144 | |

d. | 169 |

## Question 173

### Statement

True-False▾Square root of a negative numbers are imaginary number. This statement is________

## Question 174

### Question

MCQ▾A number is multiplied by itself and then 72 is subtracted from the product. If the final result is 5928, then find the original number.

### Choices

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

a. | 36 | |

b. | 62 | |

c. | 60 | |

d. | 50 |

## Question 175

### Question

MCQ▾If , then the value of is________.

### Choices

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

a. | 3 | |

b. | 4 | |

c. | 5 | |

d. | 2 |

## Question 176

### Question

MCQ▾Find the smallest square number which is exactly divisible by 5 6,9 and 12 is, ________

### Choices

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

a. | 500 | |

b. | 180 | |

c. | 100 | |

d. | 900 |

## Question 177

### Question

MCQ▾Square root of 6084 is________.

### Choices

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

a. | 76 | |

b. | 78 | |

c. | 87 | |

d. | 77 |

## Question 178

### Question

MCQ▾If = 4, then = ________.

### Choices

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

a. | 123 | |

b. | 100 | |

c. | 144 | |

d. | 169 |

## Question 179

### Question

MCQ▾The greatest four digit number, which is a perfect square is ________.

### Choices

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

a. | 9801 | |

b. | 9805 | |

c. | 9901 | |

d. | 9900 |

## Question 180

### Question

MCQ▾Which of the following is not a perfect square?

### Choices

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

a. | 1638 | |

b. | 16384 | |

c. | 100489 | |

d. | 5329 |