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- Check operation order.
- Cancel common factors.
- Use divisibility/remainder rules where applicable.
Correct Answer: A
Correct Answer: A
Method / Topic: Number System
The answer follows the correct operation order or number rule.
Short Explanation
Detailed Explanation
Correct Answer: A
Method / Topic: Number System
<table cellspacing="0" style="border-collapse:collapse; width:85px">
<tbody>
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<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:20px; vertical-align:top; white-space:normal; width:85px">For 2728, the difference between alternating digit sums is (2+2)-(7+8)=4-15=-11, which is divisible by 11. Therefore, 2728 is divisible by 11.</td>
</tr>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:20px; vertical-align:top; white-space:normal; width:85px"> </td>
</tr>
</tbody>
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Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Shortcut used, common trap, and the fastest solving route
- Check operation order.
- Cancel common factors.
- Use divisibility/remainder rules where applicable.
Which of the following numbers is divisible by 11?
Explanation
Correct Answer: A
Method / Topic: Number System
The answer follows the correct operation order or number rule.
Short Explanation
Detailed Explanation
Correct Answer: A
Method / Topic: Number System
<table cellspacing="0" style="border-collapse:collapse; width:85px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:20px; vertical-align:top; white-space:normal; width:85px">For 2728, the difference between alternating digit sums is (2+2)-(7+8)=4-15=-11, which is divisible by 11. Therefore, 2728 is divisible by 11.</td>
</tr>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:20px; vertical-align:top; white-space:normal; width:85px"> </td>
</tr>
</tbody>
</table>
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