Question:A = { a, b, c } এবং B = { d, e, f } হয় তবে P(A-B) এর সদস্য সংখ্যা কত? 

A 9 
B 8 
C 7 
D 6 

+ Answer
B 

+ Explanation
[ন. প্র. রা. বো. ]

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Zinia Islam

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