IMO- Mathematics Olympiad Class 8: Questions 531 - 537 of 1029

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Question number: 531

» Direct and Inverse Proportions

MCQ▾

Question

A man completes 47 of a job in 10 days. At this rate how many more days will it take him to finish the job?

Choices

Choice (4) Response

a.

6

b.

7.5

c.

6.5

d.

7

Question number: 532

» Exponents and Powers

MCQ▾

Question

The standard form of 0.00005 is________.

Choices

Choice (4) Response

a.

5×106

b.

5×105

c.

5×107

d.

5×104

Question number: 533

» Exponents and Powers

MCQ▾

Question

Given that 100.90=x,100.45=y and xz=y2 , then the value of z is (approximately) ________.

Choices

Choice (4) Response

a.

1.23

b.

1.21

c.

1.99

d.

1.00

Question number: 534

» Direct and Inverse Proportions

MCQ▾

Question

A grocer has just enough money to buy 50 kilo rice worth Rs. 70.00 per kilogram. If cost of the rice is Rs. 10.00 more, then how much rice, he will be able to buy with that amount of money, is________.

Choices

Choice (4) Response

a.

40 Kg

b.

42 Kg

c.

44 Kg

d.

35 Kg

Question number: 535

» Direct and Inverse Proportions

MCQ▾

Question

Pipe A can fill an empty tank in 4 hours while pipe B can empty the full tank in 3 hours. If both are opened in the empty tank, time taken to empty it up completely is ________.

Choices

Choice (4) Response

a.

11 hours

b.

13 hours

c.

15 hours

d.

12 hours

Question number: 536

» Exponents and Powers

MCQ▾

Question

If xy=54 , then x2+y2x2y2 is________.

Choices

Choice (4) Response

a.

4142

b.

413

c.

419

d.

941

Question number: 537

» Direct and Inverse Proportions

MCQ▾

Question

The weight of a 11 m long iron rod is 15 kg. The weight of 5 m long of such rod will be________.

Choices

Choice (4) Response

a.

8.5 kg

b.

6.5 kg

c.

6.8 kg

d.

8 kg

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