IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 577 - 584 of 1040

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Question number: 577

» Exponents and Powers

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MCQ▾

Question

If , then the value of is________.

Choices

Choice (4) Response

a.

2

b.

3

c.

4

d.

1

Question number: 578

» Exponents and Powers

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MCQ▾

Question

When simplified, is equal to________

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 579

» Exponents and Powers

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MCQ▾

Question

Number of prime factors in is

Choices

Choice (4) Response

a.

4

b.

9

c.

6

d.

8

Question number: 580

» Direct and Inverse Proportions

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MCQ▾

Question

A man completes of a job in 12 days. At this rate how many more days will it take him to finish the job?

Choices

Choice (4) Response

a.

23

b.

27

c.

24

d.

26

Question number: 581

» Direct and Inverse Proportions

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MCQ▾

Question

can do a piece of work in 20 days and can do alone it in 10 days. B works at it for 5 days and then leaves. alone can finish the remaining work in________.

Choices

Choice (4) Response

a.

10 days

b.

10.5 days

c.

5 days

d.

11 days

Question number: 582

» Direct and Inverse Proportions

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MCQ▾

Question

Two numbers are in the ratio 7: 9. If each number is increased by 18, the ratio becomes 9: 11. The numbers are________.

Choices

Choice (4) Response

a.

35,81

b.

63,81

c.

63,85

d.

65,35

Question number: 583

» Direct and Inverse Proportions

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MCQ▾

Question

A bag contains 50 paise, 25 paise and 10 paise coins in the ratio 1: 2: 3. If their total value is Rs. 26, the number of 50 paise coins is ________.

Choices

Choice (4) Response

a.

50

b.

80

c.

30

d.

20

Question number: 584

» Direct and Inverse Proportions

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MCQ▾

Question

If , then the value of is________.

Choices

Choice (4) Response

a.

35

b.

31

c.

36

d.

39