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দুইটি সংখ্যার অনুপাত $5:7$ এবং গ.সা.গু. $4$ হলে, সংখ্যা দুইটির ল.সা.গু. কত?

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দেওয়া আছে, সংখ্যা দুইটির অনুপাত $5:7$

মনে করি, সংখ্যা দুইটি $5x$ ও $7x$, যেখানে, $x$ অনুপাতের সাধারণ গুণিতক।

$5x$ ও $7x$ এর গ.সা.গু. $x$

প্রশ্নানুসারে, $x=4$

$5x$ ও $7x$ এর ল.সা.গু. $35x$$=35 \times 4$$=140$

অতএব, সংখ্যা দুইটির ল.সা.গু. $140$ [Answer]

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