15. An infinite sequence of positive integers is called an “alpha sequence” if the number of even integers in the sequence is finite. If S is an infinite sequence of positive integers, is S an alpha sequence?
(1) The first ten integers in S are even.
(2) An infinite number of integers in S are odd.
ans: E. Mine: B.
No question on (1).
Question is:
if (2) says: in S, odd numbers are infinite, then i would have picked up E as well.
However, (2) An infinite number of integers in S are odd means, for me, only odd numbers are infinite and even numbers are finite.
XDJM, how do you guys understand this expression?
thanks a lot. |