Q9:C
Is the measure of one of the interior angles of quadrilateral ABCD equal to 60 degrees?
(1) Two of the interior angles of ABCD are right angles.
(2) The degree measure of angle ABC is twice the degree measure of angle BCD.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
有没有可能是两个９０度，一个４５度，一个１３５度呢
Q32: B
If x is an integer, is 3x + 7 even?
(1) (x – 5)(x + 1) = 0
(2) x is a factor（因数） of 105.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
第一个条件不论Ｘ等于５还是－１，３Ｘ＋７都是ＥＶＥＮ，为什么不选Ｄ呢
多谢各位
The first one has been discussed already. Trust yourself. The answer IS E.
The answer of the second one is wrong too, should be D, as you said.
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