let `mu`= the set of all triangles, P = the set of all isosceles triangles, Q = the
Channel: Doubtnut
Date: 2020-01-28

let `mu`= the set of all triangles, P = the set of all isosceles triangles, Q = the set of all equilateral triangles, R = the set of all right-angled triangles. What do the sets `PnnQ` and R-P represents respectively ?