IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 372 - 378 of 968
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Question number: 372
Question
If occur with frequencies respectively, then the arithmetic mean is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 120 |
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| b. | 125 |
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| c. | 115 |
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| d. | 111 |
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Question number: 373
Question
The mean of 11 observations is 30. If the mean of the first 6 observations is 40 and that of the last 6 observations is 44, then the Sixth observation is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 174 |
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| b. | 131 |
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| c. | 137 |
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| d. | 128 |
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Question number: 374
Question
The coordinates of the centre of a circle passing through is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
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| b. |
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| c. |
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| d. |
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Question number: 375
Question
Find the area of triangle if the coordinates of vertices are is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 2 sq. units. |
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| b. | 5 sq. units |
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| c. | 9 sq. units |
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| d. | 3 sq. units |
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Question number: 376
Question
Find the area of the quadrilateral, the coordinates of whose angular points taken in order are.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 8 |
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| b. | 12 |
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| c. | 10 |
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| d. | 6 |
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Question number: 377
Question
Find the area of triangle if the coordinates of vertices are is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 45.2 sq. units |
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| b. | 20.5 sq. units. |
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| c. | 19.3 sq. units |
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| d. | 33.5 sq. units |
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Question number: 378
Question
The mean weight of a class of 24 students is kg. if the weight of the teacher is included, the mean rises by 400 g. Then the weight of the teacher is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 65 kg |
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| b. | 50 kg |
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| c. | 55 kg |
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| d. | 45 kg |
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