# IMO- Mathematics Olympiad Class 8: Questions 72 - 78 of 1029

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1029 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

## Question number: 72

MCQ▾

### Question

The sum of two numbers is 13 and difference of their squares is 13. The difference of the numbers is?

### Choices

Choice (4) Response

a.

1

b.

2

c.

0

d.

3

## Question number: 73

MCQ▾

### Question

The value of for which is_.

### Choices

Choice (4) Response

a.

b.

18

c.

d.

35

## Question number: 74

MCQ▾

### Question

A number 121 is divided into two parts in the ratio 6: 5. The product of the number is_.

### Choices

Choice (4) Response

a.

3211

b.

1550

c.

3750

d.

3630

## Question number: 75

MCQ▾

### Question

Solution of the equation is_.

### Choices

Choice (4) Response

a.

5

b.

0

c.

-5

d.

1

## Question number: 76

MCQ▾

### Question

A number 100 is divided into two parts in the ratio 3: 2. The product of the number is_.

### Choices

Choice (4) Response

a.

2400

b.

2700

c.

1500

d.

2600

## Question number: 77

MCQ▾

### Question

A motor boat covers a certain distance downstream in a river in 1 hours. It covers the same distance upstream in 1 and half hours. The speed of the water is 2 km/hr. The speed of the boat in still water is_.

### Choices

Choice (4) Response

a.

10 km/hr

b.

12 km/hr

c.

11 km/hr

d.

5 km/hr

## Question number: 78

MCQ▾

### Question

The perimeter of a rectangle is numerically equal to the area of rectangle. If width of rectangle is cm, then its length is_.

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page