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First differences:
Pattern: ×2 +1, ×2 +1, ...
2 × 2 + 1 = 5
5 × 2 + 1 = 11
11 × 2 + 1 = 23
23 × 2 + 1 = 47
47 × 2 + 1 = 95
Hence, missing number is 95
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