A ={set of quadrilaterals}, B={square, rectangle, trapezium, rhombus}. State whether `A subset B or B subset A`. Justify your answer.

Is it right to say that sin (A+B) =sin A +sin B ? Justify your answer.

If A={a,b,c}, name the subsets of A,

Is it true that for any sets A and B, P (A) uuP (B) = P (Auu B) ? Justify your answer.

Write down all the subsets of the set : {a, b}

Let A,B and C be three sets. If A in B and B subC, is it true that A subC? Justify your answer by an example.

Is it true that for any sets A and B, P ( A ) ∪ P ( B ) = P ( A ∪ B ) ? Justify your answer.

State whether the statements are True or False. A square is a rhombus

If A={a,b,c}, write the proper subsets of A.

State whether the statements are True or False. Every rhombus is a square

Let F_(1) be the set of parallelograms, F_(2) the set of rectangle , F_(3) the set of rhombuses, F_(4) the set of squares and F_(5) the set of trapeziums in a plane. Then, F_(1) may be equal to