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Let F1 be the set of parallelograms, F2 the set of rectangles, F3 the set of rhombuses, F4 the set of squares and F5 the set of trapeziums in a plane. Then F1 may be equal to(A) F2 ∩ F3 (B) F3 ∩ F4(C) F2 ∪ F5 (D) F2 ∪ F3 ∪ F4 ∪ F1 |
Answer» Answer is D Every rectangle, rhombus, square in a plane is a parallelogram but every trapezium is not a parallelogram. F1 = F2 ∪ F3 ∪ F4 ∪ F1 |
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