Q. 6 Let U be the set of all triangles in a plane. If A is the set of all triangles with at least one angle different from , what is A′?
A' is the set of all triangles whose angle is in other words A' is set of all equilateral triangles.
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
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