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If 1/5 of 3000 keyboards are out of order, how many remain functional?

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If 1/5 of 3000 keyboards are out of order, how many remain functional? Answer: 2400

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.