alleryযদি P = {1, 2, 3, 4, 5} এবং Q = {4, 5, 6, 7} হয়, তবে কতগুলি উপাদান P-তে রয়েছে কিন্তু Q-তে নেই?
A2
B4
C3
D5
Answer & Solution
Correct answer: C. 3
P থেকে সাধারণ উপাদান 4 এবং 5 বাদ দিলে 1, 2 এবং 3 অবশিষ্ট থাকে।
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