JJ: 710 in USA[转帖]

smart

JJ: 710 in USA
710 is not a bad score for an old contestant like me (over 30 yrs old). Before my memory
fades away, here are some jj:

Essay:
1. The town Saluda proposes to set up a well-equipped gym to reduce the town's health
insurance cost.

2. The best strategy of a business is to give as much power to capable people as possible.

Math:
1. An English word is made of three letters. The middle letter is made of one of the 5 vowels (that is a, e, i, o, u). The first and last letters, while different from each other, are made of the remaining 21 non-vowels. How many possible words?
Answer: 5xP(21,2)

2. What is the unit digit of 7^85+4?
Answer:1

3. Is xyz>0?
(1) xy>0
(2) yz>0
Answer E

4. A straight line passes through (1,p). Does it have a positive slope?
(1)It passes through (-p, 13)
(2)It passes through (0,1)
(I believe the numbers are correct)
Answer: E

5. Two positive integers, A and B, have a zui-xiao-gong-bei-shu of 120. What is the greatest possible value of A & B's zui-da-gong-yue-shu?
(a) 20
(b) 18
(c) 15
(d) 12
(e) 10
Answer: 10

6. Person A invests x dollars, B y dollars. A earns an annual interest of 4%, B 6%. The interest is annually compounded. What is x/y?
(1) At the end of the second year, the interests earned by A and B are equal.
(2) At the end of the second year, A earns an interests of $400, B $500. (numbers are not necessiliry correct)
Answer D

In logic, an old jj: \\"there is higher possiblity of a certain desease in people who
routinely drink Milk.\\"