In the sequence 8, 12, 16, 21, which number is considered incorrect?
- 8
- 12
- 16
- 21
Explanation
The pattern increases by 4 each time:
8 → 12 (+4)
12 → 16 (+4)
The next number should be 20, not 21.
Therefore, 21 is the incorrect number.
Last verified on 12-07-2026
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