Question:`(৮১)/(৩৬) = ক/৪` হলে, ক = কত ? অনুশীলনী-১.৫ 

A ৯ 
B ৭২ 
C ৩৬ 
D ১২ 

+ Answer
A 

+ Explanation
` ক xx ৩৬  = ৪ xx ৮১`

   বা, `ক = (৪ xx ৮১)/(৩৬) = ৯`

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Irin Moni

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