রেডিওওতে একটি বিজ্ঞাপন ১৫ মিনিট পরপর প্রচারিত হয় এবং বিজ্ঞাপনটি প্রথম প্রচারিত হলে, সকাল ৯টা পর্যন্ত বিজ্ঞাপনটি কতবার প্রচারিত হবে?
A. ৪
B. ৩
C. ২
D. কোনোটিই নয়
সঠিক উত্তরঃ
A.
৪
Explanation:
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