If cardinality of (A U B) = cardinality of A+ cardinality of B. This means ____________a.A and B are disjointb.B is a subset of Ac.A is a subset of Bd.None of the mentioned

If cardinality of (A U B) = cardinality of A+ cardinality of B. This means ____________ a. B is a subset of A b. None of the mentioned c. A is a subset of B d. A and B are disjoint

Consider the sets:U = {1, 2, {1}, {2}, {1, 2}}     A = {1, 2, {1}}      B = {{1}, {1, 2}}     C = {2, {1}, {2}}A – B is the set:a.{1, 2}b.{1, {1, 2}}c.{ }d.{{1, 2}}

U = {a, b, c, d, e}    A = {d, e}    B = {a, b, c}.Which one of the following statements regarding the sets U, A and B is TRUE?a.| Ƥ (U) | = | Ƥ (A) | + | Ƥ (B)|b.⊘ ⊂ Ƥ (A) and ⊘ ⊂ Ƥ (B)c.U – A = A – Ud.A + B = U

U = {1, 2, {1}, {2}, {1, 2}}      A = {1, 2, {1}}       B = {{1}, {1, 2}}     C = {2, {1}, {2}}.Which one of the following statements is valid if x ∉ B U C? (Hint: Determine U – (B U C).)a.x ∈ {1}.b.x ∈ ⊘.c.x ∈ {1, 2}.d.x ∈ B and x ∈ C.

Consider the sets:U = {1, 2, {1}, {2}, {1, 2}}     A = {1, 2, {1}}      B = {{1}, {1, 2}}     C = {2, {1}, {2}}Ƥ (A) is the set:a.{⊘, {1}, {2}, {1, 2}, {1, 2, {1}}}b.{⊘, {1}, {2}, {{1}}, {1, 2}, {1, {1}}, {2, {1}}, {1, 2, {1}}}c.{⊘, {1}, {2}, {{1, 2}}, {1, {1}}, {2, {1}}, {1, 2, {1, 2}}}d.{⊘, {1}, {2}, {{1}}, {1, {1}}, {2, {1}}, {1, 2, {1}}}