UP Police Constable practice question
Find the LCM of 54, 72 and 120.
From a UP Police Constable Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (A) 1080
Prime factorise: 54 = 2 × 33; 72 = 23 × 32; 120 = 23 × 3 × 5. LCM takes every prime at its highest power: 23 × 33 × 5 = 1080.
हिंदी में प्रश्न
54, 72 और 120 का ल.स. (LCM) ज्ञात कीजिए।
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सही उत्तर: (A) 1080
अभाज्य गुणनखंडन: 54 = 2 × 33; 72 = 23 × 32; 120 = 23 × 3 × 5। ल.स. में प्रत्येक अभाज्य की उच्चतम घात ली जाती है: 23 × 33 × 5 = 1080।
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