## Search found 2663 matches

If x, y are integers, is x+y an odd number? 1) y=3x+5. 2) y=2x-3. The OA is the option A . How can I get an answer here just using the statement (1)? Experts, I will wait for your answer. You could also pick numbers. Just make sure to pick both even and odd values for x. Statement 1: x = 1, y = 8, ...

- by [email protected]

Fri Mar 16, 2018 8:13 am- Forum: Data Sufficiency
- Topic: If x, y are integers, is x+y an odd number?
- Replies:
**2** - Views:
**2237**

It is theoretically possible that bacteria developed on Mars early in its history and that some were carried to Earth by a meteorite. However, strains of bacteria from different planets would probably have substantial differences in protein structure that would persist over time, and no two bacteri...

- by [email protected]

Fri Mar 16, 2018 8:05 am- Forum: Critical Reasoning
- Topic: It is theoretically possible that bacteria developed
- Replies:
**1** - Views:
**2693**

Mayor A: In 1982 the courthouse that Roseville still needs would have cost 26 million. Now in 1992 the same building is costing the city close to 30 million to build. If it had been built in 1982 when I first showed how the building would relieve the overcrowding, Roseville would have saved at leas...

- by [email protected]

Fri Mar 16, 2018 8:02 am- Forum: Critical Reasoning
- Topic: Mayor A: In 1982 the courthouse that Roseville
- Replies:
**1** - Views:
**2394**

When positive integer x is divided by 20, the remainder is 8. What is the remainder when x is divided by 5? A. 1 B. 3 C. 5 D. 8 E. Cannot be determined The OA is B . I get the solution to this PS question as follow, When x is divided by 20 the remainder is 8. Therefore x is of form 20k + 8, where k...

- by [email protected]

Fri Mar 16, 2018 7:50 am- Forum: Problem Solving
- Topic: When positive integer x is divided by 20, the remainder is 8
- Replies:
**5** - Views:
**3439**

$$Is\ \ \ \ \frac{1}{x-y} < y-x\ .$$ $$(1)\ \ \ \frac{1}{x} < \frac{1}{y}$$ $$(2)\ \ \ 2x = 3y$$ The OA is the option C . Experts, can you help me here? How can I show that each statement alone is not sufficient? Thanks. Let's rephrase the question. If x > y, then x - y > 0 and y -x < 0. The left s...

- by [email protected]

Fri Mar 16, 2018 7:46 am- Forum: Data Sufficiency
- Topic: Is 1/(x - y) < y - x
- Replies:
**1** - Views:
**1807**

How many prime numbers exist between 200 and 220? (A) None (B) One (C) Two (D) Three (E) Four The OA is B . Experts, what is the best approach that I could use to solve this PS question? May you give me some help? Hello M7MBA. I would solve it like this: We don't have to check the even numbers. Now...

- by [email protected]

Fri Mar 16, 2018 7:29 am- Forum: Problem Solving
- Topic: How many prime numbers exist between 200 and 220?
- Replies:
**3** - Views:
**3946**

If p, q, r, and s are consecutive integers, with p < q < r < s, is pr < qs? (1) pq < rs (2) ps < qr The OA is A . I got confused with the inequalities. Experts, can you show me how you'd solve it? Please. Interesting question. We could do a little algebra here. If the numbers are consecutive, and p...

- by [email protected]

Thu Mar 15, 2018 10:37 am- Forum: Data Sufficiency
- Topic: If p, q, r, and s are consecutive integers, with
- Replies:
**1** - Views:
**1722**

If the volume of a cube with side of length 6 is equal to the volume of a rectangular solid with length 12 and width 9, then the height of the rectangular solid is (A) 2 (B) 4 (C) 6 (D) 8 (E) 9 The OA is A . What is the formula that I should use? And what are the equations needed? There's no gettin...

- by [email protected]

Thu Mar 15, 2018 8:18 am- Forum: Problem Solving
- Topic: If the volume of a cube with side of length 6 is equal
- Replies:
**5** - Views:
**1925**

Tap A can fill a tank in 10hrs, Tap B can fill it in 20hrs, and an outlet, Tap C can empty the tank in 30hrs. Each tap is opened, one by one, for exactly one hr and then closed. If its 7AM, the tank is 1/4th full and taps work in alphabetic order(A then B and then C), at what time will the tank beg...

- by [email protected]

Thu Mar 15, 2018 5:54 am- Forum: Problem Solving
- Topic: Tap A can fill a tank in 10hrs,Tap B can fill it in 20hrs
- Replies:
**3** - Views:
**1290**

A committee of 2 people is to be selected out of 3 teachers and 4 preachers. If the committee is selected at random, what is the probability that the committee will be composed of at least 1 preacher? A. 1/4 B. 1/3 C. 2/3 D. 6/7 E. 8/9 The OA is D . Should I use combinations here? Or probability? I...

- by [email protected]

Thu Mar 15, 2018 5:41 am- Forum: Problem Solving
- Topic: A committee of 2 people is to be selected out of
- Replies:
**5** - Views:
**1829**

A committee of 2 people is to be selected out of 3 teachers and 4 preachers. If the committee is selected at random, what is the probability that the committee will be composed of at least 1 preacher? A. 1/4 B. 1/3 C. 2/3 D. 6/7 E. 8/9 The OA is D . Should I use combinations here? Or probability? I...

- by [email protected]

Thu Mar 15, 2018 5:37 am- Forum: Problem Solving
- Topic: A committee of 2 people is to be selected out of
- Replies:
**5** - Views:
**1829**

If the ratio of apples to bananas is 4 to 3 and the ratio of bananas to cucumbers is 1 to 5, what is the ratio of apples to cucumbers? A. 4:15 B. 1:3 C. 2:5 D. 4:5 E. 7:6 The OA is A . I think that a quick way to solve this PS question is as follow, $$\frac{apples}{bananas}\cdot\frac{bananas}{cucum...

- by [email protected]

Thu Mar 15, 2018 5:32 am- Forum: Problem Solving
- Topic: If the ratio of apples to bananas is 4 to 3 and the ratio...
- Replies:
**2** - Views:
**1340**

The rectangle A has a (width) and b (height) and another rectangle B has c (width) and d (height). If a/c = b/d = 3/2, what is the ratio of the rectangle A's area to the rectangle B's? A. 3/2 B. 3/4 C. 9/2 D. 9/4 E. 27/8 The OA is D . Can I say that, a = 3k, c = 2k, b = 3m and d = 2m, since a, b an...

- by [email protected]

Thu Mar 15, 2018 5:29 am- Forum: Problem Solving
- Topic: The rectangle A has a (width) and b (height) and another...
- Replies:
**3** - Views:
**1420**

According to a recent study, fifteen corporations in the United States that follow a credo of social responsibility are also very profitable. Because of their credos, these fifteen corporations give generously to charity, follow stringent environmental-protection policies, and have vigorous affirma...

- by [email protected]

Wed Mar 14, 2018 10:58 am- Forum: Critical Reasoning
- Topic: According to a recent study, fifteen corporations
- Replies:
**2** - Views:
**1716**

Health insurance Plan A requires the insured to pay $1000 or 50% of total cost, whichever is lower. Plan B requires the insured to pay the initial $300, but then pays 80% of the cost over $300. Which of the following is a cost level for which both insurance plans pay out the same amount? A. $600 B....

- by [email protected]

Wed Mar 14, 2018 10:50 am- Forum: Problem Solving
- Topic: Health insurance Plan A requires the insured to pay $1000...
- Replies:
**5** - Views:
**2571**