Search found 32 matches
GMATprep problems, please explain!
For which of the following functions is f(a+b) = f(a) + f(b) for all positive numbers a and b? a. f(x) = x^2 b. f(x) = x +1 c. f(x) = square root of x d. f(x) = 2/x e. f(x) = -3x A certain office supply store stocks 2 sizes of self-stick notepads, each in 4 colors: blue, green, yellow, or pink. The ...
- by Veronica
Mon Oct 11, 2010 11:57 pm- Forum: Problem Solving
- Topic: GMATprep problems, please explain!
- Replies: 2
- Views: 1282
Probability and decimal
Each of the 25 balls in a certain box is either read, blue, or white and has a number from 1 to 10 painted on it. If one ball is to be selected at random from the box, what is the probability that the ball selected will either be white or have an even number painted on it? 1. Probability that the ba...
- by Veronica
Mon Oct 11, 2010 11:48 pm- Forum: Data Sufficiency
- Topic: Probability and decimal
- Replies: 3
- Views: 2465
How many integers from 0 to 50, inclusive, have a remainder of 1 when divided by 3? a.15, b.16, c.17, d.18, e.19 For this problem, I chose B, is it correct? If a and b are positive integers such that a-b and a/b are both even integers, which of the following must be an odd integer? a.a/2, b.b/2, c....
- by Veronica
Tue Sep 28, 2010 8:55 pm- Forum: Problem Solving
- Topic: Integer
- Replies: 8
- Views: 1724
How many integers from 0 to 50, inclusive, have a remainder of 1 when divided by 3? a.15, b.16, c.17, d.18, e.19 For this problem, I chose B, is it correct? If a and b are positive integers such that a-b and a/b are both even integers, which of the following must be an odd integer? a.a/2, b.b/2, c....
- by Veronica
Tue Sep 28, 2010 8:46 pm- Forum: Problem Solving
- Topic: Integer
- Replies: 8
- Views: 1724
Please explain, thanks!
Escalating worldwide demand for corn has led to a sharp increase in the market price of corn, and corn prices are likely to remain high. Corn is extensive used as feed for livestock, and because profit margins are tight in the livestock business, many farmers are expected to leave the business. With...
- by Veronica
Tue Sep 28, 2010 5:14 am- Forum: Critical Reasoning
- Topic: Please explain, thanks!
- Replies: 2
- Views: 1429
Probability, ratio, motion
6 cards numbered from 1 to 6 are placed in an empty bowl. First one card is drawn and then put back into the bowl; then a second card is drawn. If the cards are drawn at random and if the sum of the numbers on the cards is 8, what is the probability that one of the two cards drawn is numbered 5? a.1...
- by Veronica
Tue Sep 28, 2010 4:34 am- Forum: Problem Solving
- Topic: Probability, ratio, motion
- Replies: 6
- Views: 3020
Integer
How many integers from 0 to 50, inclusive, have a remainder of 1 when divided by 3? a.15, b.16, c.17, d.18, e.19 For this problem, I chose B, is it correct? If a and b are positive integers such that a-b and a/b are both even integers, which of the following must be an odd integer? a.a/2, b.b/2, c.(...
- by Veronica
Tue Sep 28, 2010 4:12 am- Forum: Problem Solving
- Topic: Integer
- Replies: 8
- Views: 1724
Integer
If k, m and t are positive integers and k/6 + m/4 = t/12, do t and 12 have a common factor greater than 1?
1. k is a multiple of 3
2. m is a multiple of 3
Please explain this question for me, thank u!
- by Veronica
Tue Sep 28, 2010 4:07 am- Forum: Data Sufficiency
- Topic: Integer
- Replies: 2
- Views: 1272
1. If a committee of 3 people is to be selected from among 5 married couples so that the committee does not include two people who are married to each other, how many such committees are possible? a. 20, b.40, c.50, d.80, e. 120 2. A certain business produced x rakes each month form Nov through Feb...
- by Veronica
Sun Sep 26, 2010 11:22 pm- Forum: Problem Solving
- Topic: 2 prolgems need help
- Replies: 8
- Views: 1724
What is the remainder when the positive integer n is divided by 3? 1. The remainder when n is divided by 2 is 1 2. The remainder when n + 1 is divided by 3 is 2 Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy? 1. She bought $4.4 worth of stamps 2. She bought an e...
- by Veronica
Sun Sep 26, 2010 11:21 pm- Forum: Data Sufficiency
- Topic: Integer
- Replies: 3
- Views: 1179
strenghthen question
Capuchin monkeys often rub their bodies with a certain type of millipede. Laboratory tests show that secretions from the bodies of these millipedes are rich in two chemicals that are potent mosquito repellents, and mosquitoes carry parasites that debilitate capuchins. Some scientists hypothesize tha...
- by Veronica
Sun Sep 26, 2010 8:47 pm- Forum: Critical Reasoning
- Topic: strenghthen question
- Replies: 7
- Views: 1972
Please explain, thanks
Floating in the waters of the equatorial Pacific, an array of buoys collects and transmits data on long-term interactions between the ocean and the a tmosphere, interactions that effect global climate. A. atmosphere, interaction that affect B. atmosphere, with interactions affecting C. atmosphere th...
- by Veronica
Sun Sep 26, 2010 8:34 pm- Forum: Sentence Correction
- Topic: Please explain, thanks
- Replies: 7
- Views: 1671
Integer
What is the remainder when the positive integer n is divided by 3? 1. The remainder when n is divided by 2 is 1 2. The remainder when n + 1 is divided by 3 is 2 Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy? 1. She bought $4.4 worth of stamps 2. She bought an eq...
- by Veronica
Sun Sep 26, 2010 8:26 pm- Forum: Data Sufficiency
- Topic: Integer
- Replies: 3
- Views: 1179
Percentage
Last Sunday a certain store copies of Newspaper A for $1 each and copies of Newspaper B for $1.25 each, and the store sold no other newspapers that day. If r percent of the store's revenues from newspaper sales was from Newspaper A and if p percent of the newspapers that the store sold were copies o...
- by Veronica
Sun Sep 26, 2010 8:13 pm- Forum: Problem Solving
- Topic: Percentage
- Replies: 2
- Views: 1029
2 prolgems need help
1. If a committee of 3 people is to be selected from among 5 married couples so that the committee does not include two people who are married to each other, how many such committees are possible? a. 20, b.40, c.50, d.80, e. 120 2. A certain business produced x rakes each month form Nov through Feb ...
- by Veronica
Sun Sep 26, 2010 8:09 pm- Forum: Problem Solving
- Topic: 2 prolgems need help
- Replies: 8
- Views: 1724