Correct Answer: E
Explanation:
Some integers in set X are odd.
If the statement above is true, which of the following must also be true?
Option A: If an integer is odd, it is in set X. --- It may be true but not always.
Option B: If an integer is even, it is in set X. --- It may be true but not always.
Option C: All integers in set X are odd. --- Give information states that some integers are odd, so it is not true
Option D: All integers in set X are even. --- Not true.
Option E: Not all integers in set X are even. --- Not all integers in the set are even as some integers in the set are odd.