Search found 26 matches
decimals
What is the hundredths digit of the decimal z?
1. the tenths digit of 100z is 2
2. the units digit of 1000z is 2
[spoiler]OA: E[/spoiler]
- by trangle
Sat Jan 01, 2011 8:48 am- Forum: Data Sufficiency
- Topic: decimals
- Replies: 1
- Views: 959
combination
All of the stocks on the over-the-counter market are designated by either a 4-letter or a 5-letter code that is created by using the 26 letters of the alphabet. Which of the following gives the maximum number of different stocks that can be designated with these codes? a. 2(26^5) b. 26(26^4) c. 27(2...
- by trangle
Sat Jan 01, 2011 8:39 am- Forum: Problem Solving
- Topic: combination
- Replies: 1
- Views: 994
functions
For which of the following functions f is f(x)=f(1-x) for all x?
a. f(x)=1-x
b. f(x)=1-x^2
c. f(x)=x^2-(1-x)^2
d. f(x)=x^2(1-x)^2
e. f(x)=x/(1-x)
[spoiler]OA: D[/spoiler]
- by trangle
Sat Jan 01, 2011 8:36 am- Forum: Problem Solving
- Topic: functions
- Replies: 1
- Views: 1039
area
Please help: A thin piece of wire 40 meters long is cut into two pieces. One piece is used to form a circle with radius r, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square meters, of the circular and the square regions in terms...
- by trangle
Sat Jan 01, 2011 8:33 am- Forum: Problem Solving
- Topic: area
- Replies: 1
- Views: 954
- by trangle
Mon Dec 13, 2010 9:17 pm- Forum: Sentence Correction
- Topic: Set 22 --Q.19-Health care company
- Replies: 3
- Views: 1665
The answer should be B in my opinion because the "comma" before "so that" is a correct structure. E is wrong because there is no "comma" before "that" in a "so X that Y" idiom
- by trangle
Sat Dec 11, 2010 8:13 pm- Forum: Sentence Correction
- Topic: Sentence correction Set-23-Q-1
- Replies: 7
- Views: 1583
OG#42
Could somebody explains to me how the answer is correct? Scientists have recently discovered what could be the largest and oldest living organism on Earth, a giant fungus that is an interwoven filigree of mushrooms and rootlike tentacles spawned by a single fertilized spore some 10,000 years ago and...
- by trangle
Thu Dec 09, 2010 7:54 pm- Forum: Sentence Correction
- Topic: OG#42
- Replies: 2
- Views: 1184
- by trangle
Sat Dec 04, 2010 12:21 pm- Forum: Sentence Correction
- Topic: comparison
- Replies: 2
- Views: 1514
For the first 10 shilfts, he uses total 102 2/4 (10 1/4*10) gallons. For the rest 8 shifts, he uses 97 (12 1/8*8) gallons. So, the average amount of gas that the taxi driver uses per shift is (102 2/4 + 97)/18 = 11 1/12 gallons. The answer is B.
- by trangle
Wed Dec 01, 2010 3:52 pm- Forum: Problem Solving
- Topic: A taxicab driver worked exactly 18 shifts ...
- Replies: 2
- Views: 1096
The smallest number we can pick in this problem for ponies is 18 since 18 is divided evenly by 6 in order to have 15 as number of horseshoed ponies, and 15 divided evenly by 3 to have 10 Icelandic ponies (6 or 12 will not work). If there are 18 ponies at the ranch, so there are 15 (5/6 of 18) ponies...
- by trangle
Wed Dec 01, 2010 3:38 pm- Forum: Problem Solving
- Topic: Horses
- Replies: 3
- Views: 1304
We can pick numbers to solve this problem. Let's assume a=$2 and b=$1 If the company pays per month, it pays 6 hours total. We have (1hr*$2)+(5hr*$1)=$7 If the company pays each project individually: The first project: (1hr*$2)+(1hr*$1)=$3 The second project: (1hr*$2)+(3hr*$1)=$5 So the company pays...
- by trangle
Wed Dec 01, 2010 3:11 pm- Forum: Problem Solving
- Topic: Linear agebra problem
- Replies: 5
- Views: 1333