# IMO Level 2- Mathematics Olympiad (SOF) Class 9: Questions 87 - 90 of 109

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## Question 87

Appeared in Year: *2013*

### Question

MCQ▾A large solid sphere of diameter 15 m is melted and recast into several small spheres of diameter 3 m. What is the percentage increase in the surface area of the smaller spheres over that of the large sphere?

### Choices

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

a. | Can ′ t be determined | |

b. | ||

c. | ||

d. |

## Question 88

Appeared in Year: *2013*

### Question

MCQ▾Select a figure from amongst the given options which will continue the same series as established by the five Problem Figures.

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 89

Appeared in Year: *2013*

### Question

MCQ▾Each of the vowels in the word ′ MAGNIFY is replaced by number ′ 2 ′ and each consonant is replaced by a number which is the serial number of that consonant in the word, i.e.. , M by 1, G by 3 and so on. What is the total of all the numbers once the replacement is completed?

### Choices

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

a. | 26 | |

b. | 25 | |

c. | 24 | |

d. |

## Question 90

Appeared in Year: *2013*

### Question

MCQ▾A, B, C, D, E, F, G, H and I are nine houses. C is 2 km east of B. A is 1 km north of B and H is 2 km south of A. G is 1 km west of H while D is 3 km east of G and F is 2 km north of G. I is situated just in middle of B and C while E is just in middle of H and D. Distance between A and F is ________.

### Choices

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

a. | 3 km | |

b. | 2 km | |

c. | 1.41 km | |

d. | 1 km |