# IMO- Mathematics Olympiad Class 8: Questions 532 - 538 of 1029

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## Question number: 532

MCQ▾

### Question

The standard form of 0.00005 is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 533

MCQ▾

### Question

Given that and, then the value of is (approximately) ________.

### Choices

Choice (4) Response

a.

1.23

b.

1.21

c.

1.99

d.

1.00

## Question number: 534

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

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

MCQ▾

### Question

If , then is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 537

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

## Question number: 538

MCQ▾

### Question

The ratio of boys and girls in a school of 650 students is. How many boys should be admitted to make ratio?

### Choices

Choice (4) Response

a.

140

b.

130

c.

150

d.

120

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