(A−B)−(B−C)=___
A - B
B - C
A - C
A - B - C
(A−B)−(B−C) [∵A−B=A∩B′]=(A∩B′)∩(B∩C′)′=(A∩B′)∩(B′∪C) [∵(A∩B)′=A′∪B′]=A∩[B′∩(B′∪C)]=A∩B′=A−B
(A−B)−(B−C)=_____
Match the entries given in column A with appropriate ones from column B Column AColumn B(A) Invisible atoms (a) Rutherford's atomic model(B) Mass of an atom is concentrated at the centre(b) Dalton's atomic theory(C) Energy levels(c) Thomson's atomic model(D) Plum pudding model(d) Bohr's model
(A−B)∩(C−B)=