Web Reference: The .union () operator returns the union of a set and the set of elements in an iterable. Sometimes, the | operator is used in place of .union () operator, but it operates only on the set of elements in set. Jul 31, 2024 · HackerRank Set .union () Operation solution in python 2 and 3 with practical program code example and complete full step by step explanation You are given two sets of student roll numbers. One set has subscribed to the English newspaper, and the other set is subscribed to the French newspaper. The same student could be in both sets. Your task is to find the total number of students who have subscribed to at least one newspaper.
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