Odd number: the one that is not a perfect cube (of an odd number)

This type of question, asked 2 times: 12 Sep 2025 S2, 14 Sep 2025 S3. All 2 questions below, oldest first.

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Question 1
12 Sep 2025 S2
17 $One number is not like the others : 1331, 2197, 3375, 4096$
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Question 2
14 Sep 2025 S3
17 $Identify the odd number: 1, 8, 27, 64, 121, 216$
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