IMO- Mathematics Olympiad Class 9: Questions 665 - 671 of 919
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Question number: 665
Question
If 100 men can do a job in 80 days, in how many days will 120 men do it in ________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 69 days |
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| b. | 67 days |
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| c. | 65 days |
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| d. | 63 days |
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Question number: 666
» Introduction to Euclid's Geometry
Question
In the figure 3x = 90˚, then ∠ROS is________
Find the Value of Angle ROS
Different angles are given and find the ∠ros.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 140˚ |
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| b. | 130˚ |
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| c. | 150˚ |
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| d. | 120˚ |
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Question number: 667
Question
The compound interest on Rs. 80000 at per annum for 9 months, compound quarterly is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Rs. 15610 |
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| b. | Rs. 12610 |
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| c. | Rs. 14610 |
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| d. | Rs. 13610 |
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Question number: 668
Question
If, then =
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 1 |
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| b. | 0 |
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| c. | 3 |
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| d. | 2 |
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Question number: 669
Question
A man rows downstream 30 km and upstream 18 km, taking 5 hours each time. The velocity of current is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 6 km/hr |
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| b. | 1.2 km/hr |
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| c. | 3.6 km/hr |
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| d. | 2.4 km/hr |
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Question number: 670
» Introduction to Euclid's Geometry
Question
According to Euclid, a point has________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | No length, no breadth and no thickness |
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| b. | No Length but breadth and thickness |
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| c. | Length, breadth and thickness |
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| d. | Length and breadth but no thickness |
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Question number: 671
» Linear Equations in Two Variables
Question
The number of values of k for which the system of equations , has the solutions?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
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| b. |
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| c. |
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| d. |
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