Question

How to find n(A-B) and n(B-A) if A=(1,3,5,7,9,11,13) and B=(2,3,5,7,11) ?

Answer 1

Answer:

Step-by-step explanation:

a={ 1,3,5,7,9,11,13}  b={ 2,3,5,7,11}

n(a-b)= {1,3,5,7,9,11,13} - { 2,3,5,7,11}

         = {1,9,13}

n(b-a)= {2,3,5,7,11} - {1,3,5,7,9,11,13}

          = {2}