Question

A={prime numbers less than 20}
B= {whole numbers less than 10}
find {A-B} u {B-A}
(AUB) - (AnB)​

Answer 1

Answer:

Step-by-step explanation:

A={prime numbers less than 20}

B= {whole numbers less than 10}

find

{A-B} u {B-A}

SOLUTION

ROASTER FORM OF THE TWO SETS

$\bigstar$ A = { prime numbers less than 20}

Prime numbers less than 20 are :-

2,3,5,7,11,13,17,19

So, A ={ 2,3,5,7,11,13,17,19}

$\bigstar$ B= {whole numbers less than 10}

So, B = { 0,1,2,3,4,5,6,7,8,9}

{A-B} U {B-A}

Set A - B , means the elements in set A that do not belong to set B

∴ { A -B} =  {11,13,17,19}

Set of B - A , means that elements in set B that do not belong to set A

∴ {B-A} = { 0,1, 4,6,8,9}

{A-B} U {B-A} = { 0,1, 4,6,8,9,11,13,17,19}