Question

The zip code of a location consists of five digits chosen from the set Z shown below.
Z = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}

The set L represents the digits in the zip code for Key Largo.
L = {3, 3, 0, 3, 7}

The set K represents the digits in the zip code for Killarney.
K = {3, 4, 7, 4, 0}

How many odd numbers are in the set ~ (L ∪ K)?

Answer 1

Odd numbers in Z set ={ 1,3, 5, 7, 9 }
Odd numbers in ( L U K) set = { 3, 7 }
=> Odd number not in(L ∪ K)={ 1, 5, 9 } Thus 3 odd numbers.