55 53 50 45 38 ?
27
Series: 55, 53, 50, 45, 38, ?
Differences:
55 → 53 = −2
53 → 50 = −3
50 → 45 = −5
45 → 38 = −7
Pattern: subtracting consecutive prime numbers (2, 3, 5, 7)
Next subtract 11:
38 − 11 = 27
Final Answer: 27
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