IBPS PO Prelims practice question
Find the LCM of 15, 56 and 64.
From a IBPS PO Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (D) 6720
Prime factorise: 15 = 3 × 5; 56 = 23 × 7; 64 = 26. LCM takes every prime at its highest power: 26 × 3 × 5 × 7 = 6720.
हिंदी में प्रश्न
15, 56 और 64 का ल.स. (LCM) ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 6720
अभाज्य गुणनखंडन: 15 = 3 × 5; 56 = 23 × 7; 64 = 26। ल.स. में प्रत्येक अभाज्य की उच्चतम घात ली जाती है: 26 × 3 × 5 × 7 = 6720।
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