The ratio of two numbers is 3:4 and their LCM is 84, find the number-

A 28
B 34
C 82
D 54

Correct Answer: 28

মনেকরি, সংখ্যাদ্বয় 3x ও 4x .:. ল.সা.গু = 12x প্রশ্নমতে, 12x = 84 ⇒ x = 7 .:. সংখ্যাদয় (3 x7) = 21 এবং (4 x 7) = 28
Bissoy MCQ

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