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What is the wrong digit in this sequence: 12,11,18,45,196,795,4734?

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What is the wrong digit in this sequence: 12,11,18,45,196,795,4734?
posted Dec 19, 2017 by anonymous

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1 Answer

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  1. All the numbers except 11 are composite numbers (not prime).
    Another way 11 could be wrong is that the series could become ascending if it was replaced by any value >12 & 18<.
  2. Only 196 is a perfect square.
  3. 12 is the only outlier without which the series becomes ascending.
answer Dec 19, 2017 by Tejas Naik
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