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

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## Question 641

### Question

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

### Choices

Choice (4) | Response | |
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a. | ||

b. | ||

c. | ||

d. |

## Question 642

### 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

### 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 | |
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a. | ||

b. | ||

c. | ||

d. |

## Question 644

### 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

### Question

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

### Choices

Choice (4) | Response | |
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a. | ||

b. | ||

c. | ||

d. |

## Question 646

### Question

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

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |