Let A, B and C be non-empty sets and let X = ( A - B ) - C and Y = ( A - C ) - ( B - C ). Which one of the following is TRUE?
x = (A-B) - C = {1,4} - {4,5,6,7 } = 1
y = (A-C) -(B-C) = {1,2} - {2,3} = 1
So X = Y. Answer A
yes X= Y here is shaded area :-
From the venn diagram it is clear that, X=Y (Option A)
we can also check by taking any three random sets
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