Question:
If in the third step, "9" interchanges its position with "14" and "Orange" also interchanges its position with "Rotator", then which element will be to the immediate right of "18"?
If in the third step, "9" interchanges its position with "14" and "Orange" also interchanges its position with "Rotator", then which element will be to the immediate right of "18"?
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When multiple swaps are specified, carry them out on a clean copy of the line and then read off the requested neighbor directly.
Updated On: Jul 16, 2026
- Radar
- 14
- Union
- Rotator
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The Correct Option is B
Approach Solution - 1
Step 1: Write the sequence at Step 3.
Step 3 (before the stated swaps) is: \[ \text{Wow},\ 3,\ \text{Orange},\ 18,\ \text{Radar},\ 9,\ \text{Rotator},\ 14,\ \text{Unit},\ 9,\ 11. \] Step 2: Perform the two interchanges.
(i) Interchange the entries \(\,9\,\) and \(14\) \(\Rightarrow\) the \(14\) moves next to \(18\).
(ii) Interchange \(\text{Orange}\) and \(\text{Rotator}\) (this does not change the neighbor of \(18\)).
Step 3: Read the immediate right of \(18\).
After the swaps, the element immediately to the right of \(18\) is \[ \boxed{14}. \]
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Approach Solution -2
Rather than rewriting the whole row, let's track only what happens immediately next to 18 before and after the swaps.
Before the swaps, in Step 3 the term right after 18 is Radar (Step 3: Wow, 3, Orange, 18, Radar, 9, Rotator, 14, Unit, 9, 11).
- Option Radar: This is who occupies the spot before the swap, but the question asks for the position after the two interchanges, so this is the pre-swap answer, not the final one.
- Option 14: The swap exchanges \(9\) and \(14\). Since the \(9\) immediately following \(18\) moves to where \(14\) used to sit, \(14\) itself moves into the slot vacated by that \(9\) — directly after \(18\). The Orange-Rotator swap happens elsewhere in the row and does not touch this neighbourhood. So after both swaps, \(14\) is immediately to the right of \(18\).
- Option Union: There is no "Union" term in this arrangement at all (only "Unit"), so this cannot be correct.
- Option Rotator: Rotator only changes places with Orange, which sits well away from the \(18\)-Radar-\(9\) region, so Rotator never comes anywhere near \(18\).
Tracking just the swapped neighbours shows \(14\) ends up immediately after \(18\).
Hence, the correct answer is 14.
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