Exercise 13 Page 723

Since we have the symbol ⋂, we are looking for the intersection of the given sets. X&={x |x is an odd whole number less than 16} Y&={2,6,9,10,16}Let's rewrite the set X as a set of all integers that are odd and less than 16. X&={1,3,5,7,9,11,13,15} Y&={2,6,9,10,16} The intersection of two sets is the set that contains elements that are common in both sets. An element is in the intersection of X and Y if it belongs to X and to Y at the same time. X&={1,3,5,7, 9,11,13,15} Y&={2,6, 9,10,16} X ⋂ Y &={9}