Question

If A = {11, 21, 31, 41}, B = {12, 22, 31, 32}, then find:

(1) A ∪ B

(2) A ∩ B

Answer 1

If A = {11, 21, 31, 41},

B = {12, 22, 31, 32}

(1) A ∪ B = {11, 12, 21, 31, 32, 41}

(2) A ∩ B = {31}

Answer 2

If A = {11, 21, 31, 41},

B = {12, 22, 31, 32}

(1) A ∪ B = {11, 12, 21, 22, 31, 32, 41}

(2) A ∩ B = {31}