IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 114 - 120 of 1042
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Question 114
Question
MCQ▾If of a number is 20 less than the original number, then the number is_.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 50 | |
b. | 40 | |
c. | 60 | |
d. | 30 | |
Question 115
Question
MCQ▾If the angles of a triangle are in the ratio 3: 2: 1, then the difference between the greatest and smallest angles is_.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | ||
b. | ||
c. | ||
d. | 60 | |
Question 116
Question
MCQ▾A number consists of two digits whose sum is 10. If 18 is added to the number, the digits are interchanged. The number is_.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 62 | |
b. | 26 | |
c. | 64 | |
d. | 46 | |
Question 117
Question
MCQ▾The value of for which is_.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 21 | |
b. | ||
c. | 20 | |
d. | ||
Question 118
Question
MCQ▾The length of a rectangle is 5 m less than three times its breadth. The length and breadth of the rectangle if its perimeter is 150 m, is_.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 55m, 30m | |
b. | 20m, 50m | |
c. | 55m, 20m | |
d. | 30m, 20m | |
Question 119
Question
MCQ▾A man is 6 years older than his wife and his wife is now thrice as old as their daughter, who is 10 years old. How old the man when his daughter was born?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 26 years | |
b. | 20 years | |
c. | 22 years | |
d. | 25 years | |
Question 120
Question
MCQ▾Solution of the equation is_.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 5 | |
b. | 9 | |
c. | 10 | |
d. | 3 | |