IMO Level 2- Mathematics Olympiad (SOF) Class 9: Questions 5 - 7 of 48

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Question number: 5

» Surface Area and Volumes

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Appeared in Year: 2013

MCQ▾

Question

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.

b.

c.

d.

Can’t be determined

Question number: 6

» Analytical Reasoning and Logical Reasoning

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Appeared in Year: 2013

MCQ▾

Question

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

Image shows The Same Series For Question

Image Shows the Same Series for Question

Image shows The Same Series For Question

Choices

Choice (4) Response

a.

Image shows The Series For Choice A

Image Shows the Series for Choice A

Image shows The Series For Choice A

b.

Image shows The Series For Choice B

Image Shows the Series for Choice B

Image shows The Series For Choice B

c.

Image shows The Series For Choice C

Image Shows the Series for Choice C

Image shows The Series For Choice C

d.

Image shows The Series For Choice D

Image Shows the Series for Choice D

Image shows The Series For Choice D

Question number: 7

» Everyday Mathematics

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Appeared in Year: 2013

MCQ▾

Question

Kamla has a triangular field with sides 240 m, 200 m, 360 m, where she grew wheat. In another triangular field with sides 240 m, 320 m, 400 m adjacent to the previous field, she wanted to grow potatoes and onions. She divided the field in two parts by joining the mid-point of the longest side to the opposite vertex and grew potatoes in one part and onions in the other part. How much area (in hectares) has been used for wheat, potatoes and onions? ( ).

Choices

Choice (4) Response

a.

b.

c.

d.

None of the above