# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 822 - 824 of 1022

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## Question number: 822

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MCQ▾

### Question

The lengths of the sides of a triangle are 60 dm, 0.8 decameter and 10 m. Then its area is ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 823

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MCQ▾

### Question

Calculate the area of the shaded region of the following figure. ABCD is a rectangle having length 30 cm, breadth 20 cm. E, F and G are midpoints of AB, CD and AD respectively.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 824

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MCQ▾

### Question

In the following diagram, if ○ represents people who like mathematics, represents people who like science and ▭ represent people who like history, then answer the following question.

How many people like science and history both?

### Choices

Choice (4)Response

a.

3

b.

5

c.

9

d.

8

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