IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 67 - 72 of 1042
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Question 67
Question
MCQ▾Two angles in a triangle in the ratio 2: 3. If the sum of these angles is equal to the third angle, then the third angle is_.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | ||
| b. | ||
| c. | ||
| d. | ||
Question 68
Question
MCQ▾The length of a rectangle is 6 m more than twice of its breadth. The length and breadth of the rectangle if its perimeter is 162 m, is_.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 56m, 25m | |
| b. | 48m, 22m | |
| c. | 55m, 30m | |
| d. | 55m, 20m | |
Question 69
Question
MCQ▾A motor boat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 and half hours. The speed of the water is 1.5 km/hr. The speed of the boat in still water is_.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 11 km/hr | |
| b. | 5 km/hr | |
| c. | 10 km/hr | |
| d. | 19.5 km/hr | |
Question 70
Question
MCQ▾Of a number multiplied by of the same number make 25. The number is_.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 10 | |
| b. | 1 | |
| c. | 1000 | |
| d. | 100 | |
Question 71
Question
MCQ▾There were only two candidates in an election. One got 72 % votes and was elected by a margin of 880 votes. The total number of voters were_.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 500 | |
| b. | 2000 | |
| c. | 3000 | |
| d. | 1000 | |
Question 72
Question
MCQ▾The sum of two numbers is 13 and difference of their squares is 13. The difference of the numbers is?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 3 | |
| b. | 0 | |
| c. | 1 | |
| d. | 2 | |