Find the value which best completes the series.
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Feb 03, 2026
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6, 15, 41, 113, ?
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The logic is 6, 5, 4, 3 so it has to be 2. The 1s follow the Fibonacci sequence: 6 has zero 1s, 5 has one 1, 4 has one 1, 3 has two 1s so... 0, 1, 1, 2. So 2 has to have three 1s on its right — 2111.