Let  A = {a ,b, c , d}, B = {b , d , e ,h}, then  A⊕B  = { a , c , h}Group startsTrue or FalseTrue, unselectedFalse, unselected

Is {Ø, {Ø, {Ø}}∈ C? where C = {Ø, {Ø},{Ø,{Ø}},{Ø, {Ø},{Ø,{Ø}}}}.Group startsTrue or FalseTrue, unselectedFalse, unselected

Not (A and B) is the same as Not A and Not B.Group startsTrue or FalseTrue, unselectedFalse, unselected

Consider A={a} then ,  the power set of a set A ={Φ,{a}}Group startsTrue or FalseTrue, unselectedFalse, unselected

The set R = {(a, l), (2, b), (c,3)} is a relation from A = {a, b, c, d} to B = {1, 2, 3}. Group startsTrue or FalseTrue, unselectedFalse, unselected

The sets A = {b, c, d, e} and B = {x: x is a letter in the word "master"} are jointGroup startsTrue or FalseTrue, unselectedFalse, unselected