# IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 452 - 458 of 968

Access detailed explanations (illustrated with images and videos) to 968 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time! View Sample Explanation or View Features.

Rs. 450.00 or

How to register?

## Question number: 452

Edit
MCQ▾

### Question

In an isosceles triangle ABC, is bisected by AD where D lies on BC. It is found that . Then equals ________ Given the Triangle ABC and D is a Lies on BC

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 453

Edit
MCQ▾

### Question

The mean of is ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 454

Edit
MCQ▾

### Question

Area of quadrilateral formed by the vertices is ________

### Choices

Choice (4)Response

a.

9 sq. units

b.

8 sq. units

c.

10 sq. units

d.

7 sq. units

## Question number: 455

Edit
MCQ▾

### Question

The average of 6 number is 40. If one of the numbers is excluded, the mean gets reduced by 5. Then the excluded number is ________

### Choices

Choice (4)Response

a.

35

b.

55

c.

65

d.

45

## Question number: 456

Edit
MCQ▾

### Question

Four vertices of a parallelogram taken in order are . What will be the ratio of a and b?

### Choices

Choice (4)Response

a.

2: 1

b.

3: 4

c.

3: 1

d.

## Question number: 457

Edit
MCQ▾

### Question

A Train maintains an average speed of 40 km/hr while going from L to M and maintains an average speed of 60 km/hr while coming back from M to L. the average speed of the bus is ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 458

Edit
MCQ▾

### Question

Points are joined to form a quadrilateral. What will be the structure of quadrilateral?

### Choices

Choice (4)Response

a.

Square

b.

Rhombus

c.

Parallelogram

d.

Rectangle

Developed by: