IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 850 - 856 of 929

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Question number: 850

» Polynomials

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MCQ▾

Question

The sum of the x-coordinates of the intersection of and , is ________.

Choices

Choice (4) Response

a.

b.

0

c.

d.

Question number: 851

» Statistics and Probability

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MCQ▾

Question

Average of 10 numbers is 12. What should be added as 11th number to make the average 13?

Choices

Choice (4) Response

a.

28

b.

23

c.

30

d.

25

Question number: 852

» Analytical Reasoning and Logical Reasoning

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MCQ▾

Question

Mathematics is related to numbers in the same way as history is related to ________

Choices

Choice (4) Response

a.

Dates

b.

Events

c.

Wars

d.

People

Question number: 853

» Everyday Mathematics

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MCQ▾

Question

Age of Smith’s father is 4 times of his age. If 5 years ago, father’s age was 7 times of the age of his son at that time. What is Smith’s father present age?

Choices

Choice (4) Response

a.

40 years

b.

60 years

c.

45 years

d.

51 years

Question number: 854

» Polynomials

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MCQ▾

Question

If , then , is ________.

Choices

Choice (4) Response

a.

2

b.

3

c.

0

d.

1

Question number: 855

» Everyday Mathematics

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MCQ▾

Question

A and B invest in a business in the ratio . If of the total profit goes to charity and A’s share is Rs. 855, the total profit is ________

Choices

Choice (4) Response

a.

Rs. 1500

b.

Rs. 1537.50

c.

Rs. 1425

d.

Rs. 1576

Question number: 856

» Statistics and Probability

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MCQ▾

Question

If the mean of 17 observations is 22 and that of another 18 observations is 10, then the mean of 35 observations is ________

Choices

Choice (4) Response

a.

24.8

b.

15

c.

15.83

d.

24