IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 121 - 130 of 1042
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Question 121
Question
MCQ▾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 122
Question 123
Question
MCQ▾Square root of 2401 is________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 87 | |
b. | 78 | |
c. | 49 | |
d. | 76 | |
Question 124
Question
MCQ▾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 125
Question
MCQ▾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 126
Question
MCQ▾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 | |
Question 127
Question
MCQ▾Find the smallest square number which is exactly divisible by 15,25, and 30 is, ________
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 500 | |
b. | 180 | |
c. | 100 | |
d. | 900 | |
Question 128
Question 129
Question
MCQ▾If , then equals________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 4 | |
b. | 1 | |
c. | 3 | |
d. | 2 | |
Question 130
Question
MCQ▾The value of is________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 2 | |
b. | ||
c. | ||
d. | Both b. and c. are correct | |