IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 119 - 126 of 1040
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Question number: 119
» Linear Equations in One Variable
Question
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 number: 120
» Linear Equations in One Variable
Question
Solution of the equation is_.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 5 | |
b. | 9 | |
c. | 10 | |
d. | 3 | |
Question number: 121
Question
Squares of an even numbers is always________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Odd | |
b. | Even | |
c. | All of the above | |
d. | None of the above | |
Question number: 122
Question
If , then can be
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 13 | |
b. | 12 | |
c. | 11 | |
d. | 15 | |
Question number: 123
Question
Square root of 2401 is________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 87 | |
b. | 78 | |
c. | 49 | |
d. | 76 | |
Question number: 124
Question
A number is multiplied by itself and then 15 is subtracted from the product. If the final result is 2545, then find the original number.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 30 | |
b. | 31 | |
c. | 13 | |
d. | 32 | |
Question number: 125
Question
The area of a square field is sq. m. The length of each side of the field is ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 2.00 | |
b. | 2.50 | |
c. | 4.00 | |
d. | 1.92 | |
Question number: 126
Question
The number must be subtracted from 13245 to get a perfect square is________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 15 | |
b. | 20 | |
c. | 11 | |
d. | 10 | |