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#1 Puzzles and Games » Next number in sequence! » 2017-01-14 08:39:23
- chamywak
- Replies: 1
I am going out of my mind at solving the missing number (X) in this sequence!
If you can help me out would you mind telling me how you did it?
1, 13, 16, 61, X, 217
Please put my mind to rest and help me out! Thank you in advance! 
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