allery3 : 5-এর দ্বিগুণানুপাত (duplicate ratio) হলো
A6 : 10
B9 : 25
C27 : 125
D3 : 25
Answer & Solution
Correct answer: B. 9 : 25
দ্বিগুণানুপাতে (duplicate ratio) প্রতিটি পদের বর্গ করা হয়, যার ফলে 9 : 25 পাওয়া যায়।
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