allery72-এর নিয়ম অনুযায়ী, 18% সুদে দ্বিগুণ হতে কত সময় লাগে?
A4 বছর
B5 বছর
C3 বছর
D6 বছর
Answer & Solution
Correct answer: A. 4 বছর
72 / 18 = 4 বছর।
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