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)?

(Note: Zero is an even number.)

Answer 1

@jim_thompson5910

Answer 2

3 ?

Answer 3

can you form the set L ∪ K for me?

Answer 4

0, 3, 4,7

Answer 5

good

Answer 6

now start with {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} and erase anything you find in {0, 3, 4,7 }

Answer 7

1, 2, 5, 6, 8, 9

Answer 8

now you can see exactly how many odd numbers there are

there are 3 odd numbers (1, 5, 9), so that confirms your answer