allery72-ৰ নিয়ম ব্যৱহাৰ কৰি, 12% সুতত ধন প্ৰায় কিমান বছৰত দুগুণ হয়?
A8 বছৰ
B12 বছৰ
C5 বছৰ
D6 বছৰ
Answer & Solution
Correct answer: D. 6 বছৰ
72-ক 12-ৰে হৰণ কৰিলে 6 দিয়ে।
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