Which of the given musical instruments is NOT a percussion instrument

The same question, asked 2 times: 9 May 2023 S1*, 17 Apr 2026 S1. Every wording below, oldest first.

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Question 1
9 May 2023 S1
8 $Out of the following musical instruments, which is 'NOT' a percussion instrument?$
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Question 2
17 Apr 2026 S1
123 $Out of the following musical instruments which is ' NOT ' a percussion instrument?$
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