# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 641 - 646 of 1022

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## Question 641

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### Question

MCQ▾

In the figure (not drawn to scale), ABCD is rhombus and BD is diagonal. Find .

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 642

Edit

### Question

MCQ▾

The value of a machine depreciates every year by 5%. If the present value of the machine be Rs. 100,000, what will be its value after two years?

### Choices

Choice (4)Response
a.Rs. 99,000
b.Rs. 99,250
c.Rs. 100,050
d.Rs. 90,250

## Question 643

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### Question

MCQ▾

In the figure (not drawn to scale), ABCD is a rhombus, FHI is an equilateral triangle and CEFG is a trapezium with EC parallel to FG, DCFI, BCG and GFH are straight lines. Find x and y respectively.

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 644

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### Question

MCQ▾

If the area of a rectangle with width a is equal to the area of a square with side a, then the length of the rectangle is ________.

### Choices

Choice (4)Response
a.a
b.2a
c.
d.3a

## Question 645

Edit

### Question

MCQ▾

In the figure (not drawn to scale), ABC and DEB are triangles and FC = CE, find x.

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 646

Edit

### Question

MCQ▾

If a, b and c are the sides of a triangle, then ________.

### Choices

Choice (4)Response
a.
b.
c.
d.