# IMO- Mathematics Olympiad Class 10: Questions 450 - 455 of 958

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## Question number: 450

MCQ▾

### Question

If are the midpoints of the sides of , the area of the triangle is ________

### Choices

Choice (4) Response

a.

8 sq. units

b.

9 sq. units

c.

6 sq. units

d.

7 sq. units

## Question number: 451

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.

b.

c.

d.

## Question number: 452

MCQ▾

### Question

In an isosceles triangle ABC, is bisected by AD where D lies on BC. It is found that. Then equals ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 453

MCQ▾

### Question

The mean of is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 454

MCQ▾

### Question

Area of quadrilateral formed by the vertices is ________

### Choices

Choice (4) Response

a.

8 sq. units

b.

10 sq. units

c.

9 sq. units

d.

7 sq. units

## Question number: 455

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.

65

b.

35

c.

55

d.

45

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