We need the shortest rope that can be evenly divided into pieces of these lengths → That means we need the Least Common Multiple (LCM) of 18, 21, and 24. • 18 = 2 × 3² • 21 = 3 × 7 • 24 = 2³ × 3 • 2³ (from 24) • 3² (from 18) • 7 (from 21) Now multiply them: 2³ ×3²×7=8×9×7 Step-by-step: 8 × 9 = 72 72 × 7 = 504 Final Answer: 504 cm
Find the length of the shortest piece of rope that can be cut into equal of 18 cm, 21 cm, and 24 cm?
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Question context
This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ASF Airports Security Force preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.