10
57
The number 7 comes next.
One number does not make a sequence (nor a series).
mcmlx
11 comes next.
The pre-penultimate element of the series.
10
57
The series seems to be "add 3," so the next number in the series would be 12 followed by 15.
The number 7 comes next.
One number does not make a sequence (nor a series).
16.
7 then 7 then 5 then 6
mcmlx
It is: 4554
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