P = {x:x, 12 এর গুণনীয়কসমূহ} এবং Q = {x:x, 3 এর গুণিতক এবং x≤12 } হলে, P-Q কত?

A {1,2,4}

B {1,3,4}

C {1,3,6}

D { 1,2,6}

Solution

Correct Answer: Option A

এখানে, P = {1, 2, 3, 4, 6, 12} 

আবার, Q = {3, 6, 9, 12}     [যেহেতু x ≤ 12 ] 

     P - Q = {1, 2, 3, 4, 6, 12} - {3, 6, 9, 12} 

             = {1, 2, 4} 

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