In these questions you have
to determine if the statements contain the necessary information
to answer the questions.
Is x > 4?
1) x2 < 9
2) x is an integer
A) if statement (1) by itself
is sufficient to answer the question, but statement (2) by itself
is not;
B) if statement (2) by itself is sufficient to answer the question,
but statement (1) by itself is not;
C) if statements (1) and (2) taken together are sufficient to
answer the question, even though neither
statement by itself is sufficient;
D) If either statement by itself is sufficient to answer the
question;
E) If statements (1) and (2) taken together are not sufficient
to answer the question, requiring more data pertaining to the
problem.
GMAT Examples Solution
(1) implies that x = +/- 3 (+/- means positive or negative).
Both +3 and -3 are less than 4, so the answer is "NO"
and (1) is sufficient, that is NO, x is not greater than 4. A
"NO" answer is equally acceptable as a "YES"
answer. It is only necessary that there is sufficient information
to answer the question. (2) does not provide any necessary information.
The correct response is A.
