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Find the wrong number in the series: 4,5,12,39,158,8054, 5, 12, 39, 158, 805

  1. 158158

  2. 1212

  3. 55

  4. 805805

Show answer & explanation

Correct answer

158158

Explanation

The pattern is ×1+1,×2+2,×3+3,×4+4,×5+5\times1+1, \times2+2, \times3+3, \times4+4, \times5+5. So 39×4+4=16039 \times 4 + 4 = 160, not 158158.

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