P= {a,b}, Q={b,c}, R={3,4} হলে (P∩Q)UR এর উপাদান সংখ্যা কত?

A    2

B    3

C    4

D    5

Solution

Correct Answer: Option B

({a,b}∩{b,c})U{3,4}

= {b }U{3,4}

={b,3,4}

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