IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 632 - 635 of 929

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Question number: 632

» Statistics and Probability

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MCQ▾

Question

If the mean of 10 observations is 20 and that of another 15 observations is 16, then the mean of 25 observations is ________

Choices

Choice (4)Response

a.

18.2

b.

17

c.

18

d.

17.6

Question number: 633

» Analytical Reasoning and Logical Reasoning

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MCQ▾

Question

There are four pillars W, X, Y and Z of different heights. Three spiders A, B, C and D start to climb on these pillars simultaneously. In one chance A climbs on W 10 cm but slips down 2 cm. B climbs on X 15 cm but slips down 7 cm. C climbs on Y 14 cm but slips down 6 cm. D climbs on Z 17 cm but slips down 11 cm. if each requires 70 chances to reach the top of the pillar, what is the height of the shortest pillar?

Choices

Choice (4)Response

a.

637 cm

b.

431 cm

c.

562 cm

d.

573 cm

Question number: 634

» Linear Equations in Two Variables

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MCQ▾

Question

The graph of is

Find the correct graph for the given equation

Find the Correct Graph for the Given Equation

Choices

Choice (4)Response

a.

I

b.

IV

c.

II

d.

III

Question number: 635

» Analytical Reasoning and Logical Reasoning

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MCQ▾

Question

In the matrix there are eight designs and one space is left blank as shown by a question mark. Which answer figures will figures will replace the question mark?

Given the matrix there are eight designs and 1 space is blank

Given the Matrix There Are Eight Designs and 1 Space is Blank

Choices

Choice (4)Response

a.

Find the right choice in the related figure – Choice A

Find the Right Choice in the Related Figure – Choice A

b.

Find the right choice in the related figure – Choice B

Find the Right Choice in the Related Figure – Choice B

c.

Find the right choice in the related figure – Choice C

Find the Right Choice in the Related Figure – Choice C

d.

Find the right choice in the related figure – Choice D

Find the Right Choice in the Related Figure – Choice D

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