IMO- Mathematics Olympiad (SOF) Class 8: Questions 563 - 571 of 1029

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Question number: 563

» Exponents and Powers

MCQ▾

Question

If, then the value of a is

Choices

Choice (4) Response

a.

1

b.

2

c.

4

d.

3

Question number: 564

» Direct and Inverse Proportions

MCQ▾

Question

The ratio which bears to is________.

Choices

Choice (4) Response

a.

1.78

b.

1.64

c.

1.50

d.

1.68

Question number: 565

» Exponents and Powers

MCQ▾

Question

The value of , is________.

Choices

Choice (4) Response

a.

3

b.

5

c.

4

d.

7

Question number: 566

» Direct and Inverse Proportions

MCQ▾

Question

A man completes of a job in 15 days. At this rate how many more days will it take him to finish the job?

Choices

Choice (4) Response

a.

27

b.

22

c.

22.5

d.

25

Question number: 567

» Direct and Inverse Proportions

MCQ▾

Question

can do a piece of work in 10 days and can do alone it in 12 days. B works at it for 5 days and then leaves. alone can finish the remaining work in________.

Choices

Choice (4) Response

a.

5.8 days

b.

7.5 days

c.

6 days

d.

6.5 days

Question number: 568

» Exponents and Powers

MCQ▾

Question

If, then the value of a is

Choices

Choice (4) Response

a.

3

b.

1

c.

2

d.

4

Question number: 569

» Direct and Inverse Proportions

MCQ▾

Question

1.20 of a number equals 0.36 of another number. The ratio of the number is________.

Choices

Choice (4) Response

a.

10: 3

b.

3: 10

c.

3: 2

d.

2: 3

Question number: 570

» Direct and Inverse Proportions

MCQ▾

Question

If 4 men take an hour to dig a ditch, how long should it take 10 men to dig a ditch of the same type?

Choices

Choice (4) Response

a.

20 min

b.

23 min

c.

24 min

d.

30 min

Question number: 571

» Exponents and Powers

MCQ▾

Question

Number of prime factors in is

Choices

Choice (4) Response

a.

20

b.

28

c.

23

d.

22

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