Question

{a,b}\({b,c}\{a,b,c})

I got {a,b}, is this correct?

Answer 1

ok so we used complement definition... and we need to tackle the one in () first, so {b,c}\{a,b,c} will be {b,c}. Now we have {a,b}\({b,c}, so using complement definition again we have only {a,b}