Question:A = { a, b, c } এবং B = { b, c } হয়, তবে `P(A \\\\ B)` এর উপাদান সংখ্যা কত? 

A 8 
B 4 
C 2 
D 1 

+ Answer
C 

+ Explanation
`A \\ B = { a, b, c } - { b, c} = {a}`
`P(A \\  B) = 2^n = 2^1 = 2`

[ন. প্র. সি. বো. ]

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