IMO- Mathematics Olympiad (SOF) Class 6: Questions 187 - 192 of 1049
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Question number: 187
Question
The expression is equivalent to, uses the ________ property.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Associative |
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| b. | Closure |
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| c. | Identity |
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| d. | Commutative |
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Question number: 188
Question
Multiply the unit’s place of the number obtained by reversing the digits of the number 78923 with the hundred’s place of the number obtained by interchanging the digits in the unit’s place and the thousand’s place of the same number, we get________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 54 |
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| b. | 64 |
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| c. | 16 |
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| d. | 63 |
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Question number: 189
Question
A number is always divisible by 60 if
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | It is divisible by both 6 and 10 |
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| b. | It is divisible by both 2 and 30 |
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| c. | It is divisible by both 4 and 15 |
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| d. | All a. , b. and c. are correct |
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Question number: 190
Question
Subtract the number obtained by reversing the digits of the number 20198 from the number obtained by interchanging the digits in the unit’s place and the hundred’s place of the same number, we get________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 77121 |
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| b. | - 68229 |
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| c. | 68004 |
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| d. | - 68211 |
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Question number: 191
Question
Find the sum of the given expression.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 55 |
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| b. | - 100 |
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| c. | - 90 |
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| d. | 100 |
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Question number: 192
Question
There are 165 pens and 195 pencils. These pens and pencils are to be arranged in bags containing the same number of pens and pencils. Then the greatest number of pens and pencils possible in each bag is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 15 |
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| b. | 18 |
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| c. | 13 |
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| d. | 23 |
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