Answer:
Next 3 terms 031, N30, D31
Step-by-step explanation:
J30, J31, A31, S30
The above series represent the
first letter of the month and the days in it
J30= June which have 30 days
J31= July which has 31 days
A31= August which have 31 days
S30= September which have 30 days
30 days hath September, April, June and November. All the rest have 31 except February alone which has but 28 or 29 days
The next 3 terms of the series J30, J31, A31, S30 are 031, N30, D31