Subject
Bank Exam
Topic
City Bank Ltd. - Probationary Officer - 2016
In a class of 50 students, 18 take music, 26 take art, and 2 take both art and music. How many students in the class are not enrolled in either music or art ?
In a class of 50 students, 18 take music, 26 take art, and 2 take both art and music. How many students in the class are not enrolled in either music or art ?
ক)
6খ)
8গ)
16ঘ)
24Explanation
Solution: অনুবাদঃ একটি ক্লাসে 50 জন ছাত্র রয়েছে । 18 জন ছাত্র Music, 26 জন ছাত্র Art ও 2 জন ছাত্র উভয়টিই নিয়েছে । কতজন শিক্ষার্থী হয় Music বা Art নিয়েছে ? Total = Music + Art - Both + Neither সূত্রমতে, 50 = 18 + 26 - 2 + Neither => 50 = 42 + Neither Neither = 8 অর্থাৎ Music বা Art কোনটিই নেয় না 8 জন । Alternative : দেয়া আছে, মোট শিক্ষার্থী 50 জন এবং Music ও Art দুটি বিষয়ই নেয় 2 জন । শুধু Music নেয় = 18 - 2 = 16 জন শুধু Art নেয় = 26 - 2 = 24 জন দুটি বিষয়ই বা যেকোনো একটি বিষয় নেয় = 16 + 24 + 2 = 42 জন কোনো বিষয়ই নেয়নি = 50 - 42 = 8 জন Shortcut: কোনটিই নেয়নি = Total - [ A + B - (A B) ] = 50 - (18 + 26 - 2) = 8Related questions
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