Hard Logic Sequence Puzzle

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?




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Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

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How will you do it?

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Complete the table series riddle by finding the number that can replace "??".

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Maybe that is why, when I am working, I start working

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There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

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When monkey rotate the gear, which mark will be hit 1 or 2 ?

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What can a student say to prevent his being expelled from school?

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What has 88 keys?

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Amazing Facts

No Solution

In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki