If s and t are subsets of real numbers, then which of the following relation holds for union? (a) (s u t) = s' u t (s t)° = s°u to (b) (c) isolated point of (s

If S and T are subsets of real numbers, then which of the following relation holds for union? (A) (S u T) = S' U T (S T)° = S°U To (B) (C) Isolated point of (S T) = Isolated point of S Isolated point ofT (D) Exterior point of (S T) = Exterior point of S u Exterior point of T Let A c M and Bc N be path connected. Then A x B is path connected in (Note: Path connected and connected are same in R) N (B) Nx M M (A) (C) M x N (D)