um 11 cause it went one less than two less then 3 etc...
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What would be the next number in this series 15 12 13 10 11 8?
10
59 is the next number in this series.
The series appears to increase as follows: 1 (+3), 4 (+5), 9 (+7), 16,, etc. If so, the next number in the series would be 25 (16 + 9). * * * * * While mathematically equivalent, a simpler description is: 12, 22, 32, 42, 52 ...
Oh, what a delightful series of numbers we have here! It looks like we are moving the decimal point one place to the left each time. So, following this pattern, the next number in the series would be 0.006. Remember, there are no mistakes in this beautiful world of numbers, just happy little patterns waiting to be discovered.