SOLUTION: Look at this series: 10, 12, 14, 15, 17, 19, 20, 21, ? What number should come next in this series?

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Question 1143321: Look at this series: 10, 12, 14, 15, 17, 19, 20, 21, ?
What number should come next in this series?
Found 2 solutions by Alan3354, josgarithmetic:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Any number you want.

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Not a consistent pattern of change. You only have each successive term is either one more or two moire than current term. This mean the missing term could be either 22 or 23.