IMO- Mathematics Olympiad (SOF) Class 6: Questions 161 - 167 of 1049
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Question number: 161
Question
The HCF two numbers is 18. If one of the numbers is 90 and another is 36, then their LCM is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 180 |
|
| b. | 165 |
|
| c. | 170 |
|
| d. | 155 |
|
Question number: 162
Question
The LCM of two numbers is 138. If one of the numbers is 46 and another is 69, then the HCF is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 23 |
|
| b. | 13 |
|
| c. | 28 |
|
| d. | 29 |
|
Question number: 163
Question
There are 378 red cards in box. A boy takes out 9 red cards from it and replaces them by 14 blue cards. He continues to do so, till all red cards are replaced by blue cards. Find the number of blue cards put in the box?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 438 |
|
| b. | 658 |
|
| c. | 588 |
|
| d. | 348 |
|
Question number: 164
Question
The number 3, 116, 365 is divisible by
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 5 |
|
| b. | 5 & 7 |
|
| c. | 7 |
|
| d. | Question does not provide sufficient data or is vague |
|
Question number: 165
Question
Cube of any negative integer is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 0 |
|
| b. | Negative |
|
| c. | Depend on the nature of integer |
|
| d. | Positive |
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Question number: 166
Question
Find the smallest number which will divide the greatest 3-digit number and the greatest 5-digit number exactly.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 9 |
|
| b. | 8 |
|
| c. | 7 |
|
| d. | 3 |
|
Question number: 167
Question
If positive sign precedes a bracket the sign of the terms inside the bracket will ________ when the bracket is removed.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Change |
|
| b. | Be 0 |
|
| c. | Depends on the bracket |
|
| d. | Not change |
|