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Python: Which statement about Sets and Membership Testing is the strongest interview answer?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

Which statement about Sets and Membership Testing is the strongest interview answer?

  1. Sets store unique hashable elements and make average-case membership checks much faster than linear scans.
  2. Sets and Membership Testing is mostly a naming style choice and has little effect on runtime behavior or design tradeoffs.
  3. Sets and Membership Testing exists mainly to reduce the number of files in a Python project.
  4. Sets and Membership Testing matters only for frontend scripting and not for backend or automation code.

Hint

Start with the core rule behind Sets and Membership Testing.

Answer and rationale

Correct answer: A. Sets store unique hashable elements and make average-case membership checks much faster than linear scans.

Sets store unique hashable elements and make average-case membership checks much faster than linear scans. This is the base concept interviewers commonly test first.

Track: Python