Committee X has 4 members, committee Yhas 6 members, and these committees have no members in common. If a task force is to be formed consisting ofone member of X and one member of Y, how many different task forces arepossible?
(A) 6
(B) 9
(C) 10
(D) 20
(E) 24
参考答案：E
题目翻译：X委员会4个人，Y委员会6个人，没有重叠。如果一个任务要一个x的一个y的，几种方法?
题目全解：4*6=24。
The 15 homes in a new development areeach to be sold for one of three different prices so that the developerreceives an average (arithmetic mean) of $220,000 per home. If 4 of the homes are to be sold for $275,000each and 5 are to be sold for $200,000 each, what will be the selling price ofeach of the remaining 6 homes?
(A) $200,000
(B) $210,000
(C) $215,000
(D) $220,000
(E) $230,000
参考答案：A
题目翻译：15个房子要卖，三种不同价格，平均下来一个房子22万。4个卖27万5，5个卖20万。那剩下6个卖多少钱?
题目全解：(15*22-27.5*4-20*5)/6=20
If k is an integer and 2 < k <8, what is the value of k ?
(1) k is a factor of 30.
(2) k is a factor of 12.
E
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 TOGETHERare sufficient, but NEITHER statementALONE is sufficient.
D. EACH statement ALONE issufficient.
E. Statement (1) and statement (2) TOGETHER are NOT sufficient.
参考答案：E
题目翻译：k是2和8之间的整数，k的值是多少呢?1说k是30的因子，2说k是12的因子。
题目全解：(1)k可为3,5,6.IN;
(2)k可为3,4,6.IN;
(1)+(2)，k可为3，6.IN。
