# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 215 - 224 of 1042

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## Question 215

## Question 216

## Question 217

### Question

MCQ▾By what least number must 648 be multiplied to make it perfect cube?

### Choices

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

a. | 10 | |

b. | 4 | |

c. | 5 | |

d. | 9 |

## Question 218

### Question

MCQ▾In the number a4b, a is the smallest two digit perfect cube and a’s unit digit exceeds b by 3. then find the sum of the number and its cube root is________.

### Choices

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

a. | 2713 | |

b. | 2754 | |

c. | 2758 | |

d. | 2750 |

## Question 219

### Question

MCQ▾The smallest number by which 225 must be multiplied so that the product is a perfect cube is________.

### Choices

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

a. | 10 | |

b. | 15 | |

c. | 11 | |

d. | 9 |

## Question 220

### Question

MCQ▾The volume of a cube whose surface area is , is________.

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 221

## Question 222

## Question 223

## Question 224

### Question

MCQ▾By what least number must 3125 be multiplied to make it perfect cube?

### Choices

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

a. | 5 | |

b. | 4 | |

c. | 10 | |

d. | 25 |