Subject
Bank Exam
Topic
Dutch-Bangla Bank Ltd. - Assistant Officer - 2017
In a certain sock drawer, there are 4 pairs of black socks, 3 pairs of gray socks and 2 pairs of orange socks. If socks are removed at random without replacement, what is the minimum number of socks that must be removed in order to ensure that two socks of the same color have been removed ?
In a certain sock drawer, there are 4 pairs of black socks, 3 pairs of gray socks and 2 pairs of orange socks. If socks are removed at random without replacement, what is the minimum number of socks that must be removed in order to ensure that two socks of the same color have been removed ?
ক)
11খ)
4গ)
3ঘ)
7ঙ)
None of theseExplanation
Solution: প্রশ্নে বলা হচ্ছে যে, একটি নির্দিষ্ট ড্রয়ারে 4 জোড়া Black মোজা, 3 জোড়া Gray মোজা এবং 2 জোড়া Orange মোজা আছে । ঐ ড্রয়ার থেকে কিছু মোজা দৈবভাবে উত্তোলন করে তা পুনরায় না রাখলে একই রংয়ের উত্তোলন করতে সর্বনিম্ন কতটি মোজা উত্তোলন করতে হবে । দেয়া আছে, Black মোজা = 8 টি Gray মোজা = 6 টি এবং Orange মোজা = 4 টি প্রথম তিনবারে তিনটি ভিন্ন ভিন্ন রংয়ের মোজাই আসতে পারে । তাই চতুর্থবারে মোজা উত্তোলন করলে যেকোনো এক জাতীয় রংয়ের মোজা উত্তোলন করা হবে । তাই কমপক্ষে চারটি মোজা উত্তোলন করতে হবে ।Related questions
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