IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 322 - 327 of 1040
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Question number: 322
» Quadrilaterals and Practical Geometry
Question
The exterior angle of a regular polygon is one-fourth of its interior angle. How many sides has the polygon?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 12 |
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| b. | 4 |
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| c. | 10 |
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| d. | 8 |
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Question number: 323
» Quadrilaterals and Practical Geometry
Question
To construct a convex quadrilateral which of the following cases is not correct?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | When the lengths of four sides and one diagonal are given |
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| b. | When the lengths of three sides and the two diagonal given. |
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| c. | When the lengths of two sides and one angle are given. |
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| d. | When the lengths of two sides and two included angles are given. |
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Question number: 324
» Quadrilaterals and Practical Geometry
Question
ABCD is a quadrilateral. If its diagonals are perpendicular bisectors of each other, then ABCD is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Rectangle |
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| b. | Rhombus |
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| c. | Square |
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| d. | Parallelogram |
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Question number: 325
Question
If a number x is 15 % less than another number y and y is 15 % more than 110, then x is equal to________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 100.25 |
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| b. | 109.725 |
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| c. | 107.525 |
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| d. | 120 |
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Question number: 326
Question
The cost of a vehicle is Rs. 1,20,000. If its value depreciates at the rate of 10 % per annum then total depreciation after 2 years was________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 21100 |
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| b. | 22800 |
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| c. | 21000 |
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| d. | 22000 |
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Question number: 327
Question
The C. I. on a certain sum for 2 years is Rs. 410 and S. I. is Rs. 400. The rate of interest per annum is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 6% |
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| b. | 4% |
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| c. | 5% |
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| d. | 3% |
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