Modular Subsets

Probability Level pending

For the set of integers from 1 to 30, inclusive, what is the total number of ordered subsets of the set, such that the sum of all the elements in the subset is equivalent to 0 m o d 3 0 \bmod{3} .

Note : The empty set is one such selection. Do not exclude it from your answer.


The answer is 357914624.

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