একটি পুকুরে কচুরিপানা প্রতিদিন দ্বিগুণ হারে বৃদ্ধি পায়। যদি পুকুরটি কচুরিপানা দিয়ে ভরে যেতে ২৮ দিন লাগে তবে অর্ধেক পুকুরটি ভরে যেতে কত দিন লাগবে?
A. ১৪ দিন
B. ১৬ দিন
C. ৭ দিন
D. ২৭ দিন
সঠিক উত্তরঃ
D.
২৭ দিন
Explanation:
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