Use the following information: -
= {x|x is a natural number less than 21}
A= {x|x is an odd natural number less than 13}
B = {x|x is a prime number greater than 5}
(Note: The prime numbers less than 21 are 2, 3, 5, 7, 11, 13, 17, 19.)
Find the cardinality of the set AUB.
n(AUB) =
=
Х
5

hi there!

the answer is: 2 and -2

step-by-step explanation:

case 1: an absolute value of positive number will still be a positive number

so absolute value of 2 is 2

case 2: an absolute value of negative number will be positive number so absolute value of -2 is 2

3 hours and 15 minutes

hope this : )