একটি ড্রয়ারে ২০টি মোজা আছে। ৬০% মোজা হলো লাল আর বাকিগুলো নীল। না দেখে ন্যূনতম কতগুলো মোজা ড্রয়ার থেকে তুললে দুটো নীল মোজা অবশ্যই উঠবে?
A. ৬
B. ৮
C. ১০
D. ১৪
সঠিক উত্তরঃ
D.
১৪
Explanation:
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