The next number in the series is 30.
What is series?
It should be noted that series simply means the operation of adding values together in a data set.
In this case, it can be seen that the numbers are interchangeable between 30 and 31.
In this case, since 31 was the last number, the next number will be 30.
Learn more about series on:
brainly.com/question/24295771
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